Upstream version 10.39.225.0
[platform/framework/web/crosswalk.git] / src / chrome / browser / extensions / extension_service.cc
index 037abdb..3f1b472 100644 (file)
 #include "base/time/time.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chrome_notification_types.h"
-#include "chrome/browser/extensions/api/extension_action/extension_action_api.h"
+#include "chrome/browser/content_settings/content_settings_custom_extension_provider.h"
+#include "chrome/browser/content_settings/content_settings_internal_extension_provider.h"
+#include "chrome/browser/content_settings/host_content_settings_map.h"
+#include "chrome/browser/extensions/api/content_settings/content_settings_service.h"
 #include "chrome/browser/extensions/component_loader.h"
 #include "chrome/browser/extensions/crx_installer.h"
 #include "chrome/browser/extensions/data_deleter.h"
+#include "chrome/browser/extensions/extension_action_storage_manager.h"
+#include "chrome/browser/extensions/extension_assets_manager.h"
 #include "chrome/browser/extensions/extension_disabled_ui.h"
 #include "chrome/browser/extensions/extension_error_controller.h"
 #include "chrome/browser/extensions/extension_install_ui.h"
 #include "chrome/browser/extensions/extension_special_storage_policy.h"
 #include "chrome/browser/extensions/extension_sync_service.h"
 #include "chrome/browser/extensions/extension_util.h"
-#include "chrome/browser/extensions/external_install_ui.h"
+#include "chrome/browser/extensions/external_install_manager.h"
 #include "chrome/browser/extensions/external_provider_impl.h"
 #include "chrome/browser/extensions/install_verifier.h"
 #include "chrome/browser/extensions/installed_loader.h"
 #include "chrome/browser/extensions/permissions_updater.h"
 #include "chrome/browser/extensions/shared_module_service.h"
 #include "chrome/browser/extensions/unpacked_installer.h"
+#include "chrome/browser/extensions/updater/chrome_extension_downloader_factory.h"
 #include "chrome/browser/extensions/updater/extension_cache.h"
+#include "chrome/browser/extensions/updater/extension_downloader.h"
 #include "chrome/browser/extensions/updater/extension_updater.h"
+#include "chrome/browser/google/google_brand.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/webui/extensions/extension_icon_source.h"
 #include "chrome/browser/ui/webui/favicon_source.h"
 #include "chrome/common/extensions/extension_constants.h"
 #include "chrome/common/extensions/features/feature_channel.h"
 #include "chrome/common/extensions/manifest_url_handler.h"
-#include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
+#include "components/crx_file/id_util.h"
 #include "components/startup_metric_utils/startup_metric_utils.h"
+#include "content/public/browser/devtools_agent_host.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/storage_partition.h"
 #include "extensions/browser/event_router.h"
 #include "extensions/browser/extension_host.h"
+#include "extensions/browser/extension_prefs.h"
 #include "extensions/browser/extension_registry.h"
 #include "extensions/browser/extension_system.h"
-#include "extensions/browser/pref_names.h"
+#include "extensions/browser/install_flag.h"
 #include "extensions/browser/runtime_data.h"
+#include "extensions/browser/uninstall_reason.h"
 #include "extensions/browser/update_observer.h"
 #include "extensions/common/extension_messages.h"
+#include "extensions/common/extension_urls.h"
 #include "extensions/common/feature_switch.h"
 #include "extensions/common/file_util.h"
 #include "extensions/common/manifest_constants.h"
 #include "extensions/common/manifest_handlers/background_info.h"
+#include "extensions/common/one_shot_event.h"
 #include "extensions/common/permissions/permission_message_provider.h"
 #include "extensions/common/permissions/permissions_data.h"
 
 #if defined(OS_CHROMEOS)
 #include "chrome/browser/chromeos/extensions/install_limiter.h"
-#include "webkit/browser/fileapi/file_system_backend.h"
-#include "webkit/browser/fileapi/file_system_context.h"
+#include "storage/browser/fileapi/file_system_backend.h"
+#include "storage/browser/fileapi/file_system_context.h"
 #endif
 
 using content::BrowserContext;
@@ -99,49 +112,8 @@ namespace errors = extensions::manifest_errors;
 
 namespace {
 
-// Histogram values for logging events related to externally installed
-// extensions.
-enum ExternalExtensionEvent {
-  EXTERNAL_EXTENSION_INSTALLED = 0,
-  EXTERNAL_EXTENSION_IGNORED,
-  EXTERNAL_EXTENSION_REENABLED,
-  EXTERNAL_EXTENSION_UNINSTALLED,
-  EXTERNAL_EXTENSION_BUCKET_BOUNDARY,
-};
-
-// Prompt the user this many times before considering an extension acknowledged.
-static const int kMaxExtensionAcknowledgePromptCount = 3;
-
 // Wait this many seconds after an extensions becomes idle before updating it.
-static const int kUpdateIdleDelay = 5;
-
-static bool IsCWSSharedModule(const Extension* extension) {
-  return extension->from_webstore() &&
-         SharedModuleInfo::IsSharedModule(extension);
-}
-
-class SharedModuleProvider : public extensions::ManagementPolicy::Provider {
- public:
-  SharedModuleProvider() {}
-  virtual ~SharedModuleProvider() {}
-
-  virtual std::string GetDebugPolicyProviderName() const OVERRIDE {
-    return "SharedModuleProvider";
-  }
-
-  virtual bool UserMayModifySettings(const Extension* extension,
-                                     base::string16* error) const OVERRIDE {
-    return !IsCWSSharedModule(extension);
-  }
-
-  virtual bool MustRemainEnabled(const Extension* extension,
-                                 base::string16* error) const OVERRIDE {
-    return IsCWSSharedModule(extension);
-  }
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(SharedModuleProvider);
-};
+const int kUpdateIdleDelay = 5;
 
 }  // namespace
 
@@ -171,11 +143,14 @@ void ExtensionService::CheckExternalUninstall(const std::string& id) {
                  << "with id: " << id;
     return;
   }
-  UninstallExtension(id, true, NULL);
+  UninstallExtension(id,
+                     extensions::UNINSTALL_REASON_ORPHANED_EXTERNAL_EXTENSION,
+                     base::Bind(&base::DoNothing),
+                     NULL);
 }
 
 void ExtensionService::SetFileTaskRunnerForTesting(
-    base::SequencedTaskRunner* task_runner) {
+    const scoped_refptr<base::SequencedTaskRunner>& task_runner) {
   file_task_runner_ = task_runner;
 }
 
@@ -190,6 +165,14 @@ void ExtensionService::AddProviderForTesting(
       linked_ptr<extensions::ExternalProviderInterface>(test_provider));
 }
 
+void ExtensionService::BlacklistExtensionForTest(
+    const std::string& extension_id) {
+  ExtensionIdSet blocked;
+  ExtensionIdSet unchanged;
+  blocked.insert(extension_id);
+  UpdateBlockedExtensions(blocked, unchanged);
+}
+
 bool ExtensionService::OnExternalExtensionUpdateUrlFound(
     const std::string& id,
     const std::string& install_parameter,
@@ -198,7 +181,7 @@ bool ExtensionService::OnExternalExtensionUpdateUrlFound(
     int creation_flags,
     bool mark_acknowledged) {
   CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-  CHECK(Extension::IdIsValid(id));
+  CHECK(crx_file::id_util::IdIsValid(id));
 
   if (Manifest::IsExternalLocation(location)) {
     // All extensions that are not user specific can be cached.
@@ -234,13 +217,13 @@ bool ExtensionService::OnExternalExtensionUpdateUrlFound(
 }
 
 // static
-// This function is used to implement the command-line switch
-// --uninstall-extension, and to uninstall an extension via sync.  The LOG
-// statements within this function are used to inform the user if the uninstall
-// cannot be done.
+// This function is used to uninstall an extension via sync.  The LOG statements
+// within this function are used to inform the user if the uninstall cannot be
+// done.
 bool ExtensionService::UninstallExtensionHelper(
     ExtensionService* extensions_service,
-    const std::string& extension_id) {
+    const std::string& extension_id,
+    extensions::UninstallReason reason) {
   // We can't call UninstallExtension with an invalid extension ID.
   if (!extensions_service->GetInstalledExtension(extension_id)) {
     LOG(WARNING) << "Attempted uninstallation of non-existent extension with "
@@ -251,7 +234,8 @@ bool ExtensionService::UninstallExtensionHelper(
   // The following call to UninstallExtension will not allow an uninstall of a
   // policy-controlled extension.
   base::string16 error;
-  if (!extensions_service->UninstallExtension(extension_id, false, &error)) {
+  if (!extensions_service->UninstallExtension(
+          extension_id, reason, base::Bind(&base::DoNothing), &error)) {
     LOG(WARNING) << "Cannot uninstall extension with id " << extension_id
                  << ": " << error;
     return false;
@@ -275,7 +259,7 @@ ExtensionService::ExtensionService(Profile* profile,
       blacklist_(blacklist),
       extension_sync_service_(NULL),
       registry_(extensions::ExtensionRegistry::Get(profile)),
-      pending_extension_manager_(*this, profile),
+      pending_extension_manager_(profile),
       install_directory_(install_directory),
       extensions_enabled_(extensions_enabled),
       show_extensions_prompts_(true),
@@ -295,21 +279,19 @@ ExtensionService::ExtensionService(Profile* profile,
 
   registrar_.Add(this, chrome::NOTIFICATION_APP_TERMINATING,
                  content::NotificationService::AllBrowserContextsAndSources());
-  registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_PROCESS_TERMINATED,
+  registrar_.Add(this,
+                 extensions::NOTIFICATION_EXTENSION_PROCESS_TERMINATED,
                  content::NotificationService::AllBrowserContextsAndSources());
   registrar_.Add(this, content::NOTIFICATION_RENDERER_PROCESS_TERMINATED,
                  content::NotificationService::AllBrowserContextsAndSources());
   registrar_.Add(this, chrome::NOTIFICATION_UPGRADE_RECOMMENDED,
                  content::NotificationService::AllBrowserContextsAndSources());
-  pref_change_registrar_.Init(profile->GetPrefs());
-  base::Closure callback =
-      base::Bind(&ExtensionService::OnExtensionInstallPrefChanged,
-                 base::Unretained(this));
-  pref_change_registrar_.Add(extensions::pref_names::kInstallAllowList,
-                             callback);
-  pref_change_registrar_.Add(extensions::pref_names::kInstallDenyList,
-                             callback);
-  pref_change_registrar_.Add(extensions::pref_names::kAllowedTypes, callback);
+  registrar_.Add(this,
+                 chrome::NOTIFICATION_PROFILE_DESTRUCTION_STARTED,
+                 content::Source<Profile>(profile_));
+
+  extensions::ExtensionManagementFactory::GetForBrowserContext(profile_)
+      ->AddObserver(this);
 
   // Set up the ExtensionUpdater
   if (autoupdate_enabled) {
@@ -325,7 +307,9 @@ ExtensionService::ExtensionService(Profile* profile,
         profile->GetPrefs(),
         profile,
         update_frequency,
-        extensions::ExtensionCache::GetInstance()));
+        extensions::ExtensionCache::GetInstance(),
+        base::Bind(ChromeExtensionDownloaderFactory::CreateForProfile,
+                   profile)));
   }
 
   component_loader_.reset(
@@ -345,13 +329,11 @@ ExtensionService::ExtensionService(Profile* profile,
 
   error_controller_.reset(
       new extensions::ExtensionErrorController(profile_, is_first_run_));
+  external_install_manager_.reset(
+      new extensions::ExternalInstallManager(profile_, is_first_run_));
 
-#if defined(ENABLE_EXTENSIONS)
   extension_action_storage_manager_.reset(
       new extensions::ExtensionActionStorageManager(profile_));
-#endif
-
-  shared_module_policy_provider_.reset(new SharedModuleProvider);
 
   // How long is the path to the Extensions directory?
   UMA_HISTOGRAM_CUSTOM_COUNTS("Extensions.ExtensionRootPathLength",
@@ -362,10 +344,6 @@ const ExtensionSet* ExtensionService::extensions() const {
   return &registry_->enabled_extensions();
 }
 
-const ExtensionSet* ExtensionService::delayed_installs() const {
-  return &delayed_installs_;
-}
-
 extensions::PendingExtensionManager*
     ExtensionService::pending_extension_manager() {
   return &pending_extension_manager_;
@@ -384,6 +362,9 @@ ExtensionService::~ExtensionService() {
 }
 
 void ExtensionService::Shutdown() {
+  extensions::ExtensionManagementFactory::GetInstance()
+      ->GetForBrowserContext(profile())
+      ->RemoveObserver(this);
   system_->management_policy()->UnregisterProvider(
       shared_module_policy_provider_.get());
 }
@@ -422,8 +403,6 @@ void ExtensionService::Init() {
     component_loader_->LoadAll();
     extensions::InstalledLoader(this).LoadAllExtensions();
 
-    ReconcileKnownDisabled();
-
     // Attempt to re-enable extensions whose only disable reason is reloading.
     std::vector<std::string> extensions_to_enable;
     const ExtensionSet& disabled_extensions = registry_->disabled_extensions();
@@ -474,9 +453,6 @@ void ExtensionService::Init() {
     // rather than running immediately at startup.
     CheckForExternalUpdates();
 
-    system_->management_policy()->RegisterProvider(
-        shared_module_policy_provider_.get());
-
     LoadGreylistFromPrefs();
   }
 
@@ -544,9 +520,11 @@ bool ExtensionService::UpdateExtension(const std::string& id,
     installer->set_install_source(pending_extension_info->install_source());
     if (pending_extension_info->install_silently())
       installer->set_allow_silent_install(true);
+    if (pending_extension_info->remote_install())
+      installer->set_grant_permissions(false);
     creation_flags = pending_extension_info->creation_flags();
     if (pending_extension_info->mark_acknowledged())
-      AcknowledgeExternalExtension(id);
+      external_install_manager_->AcknowledgeExternalExtension(id);
   } else if (extension) {
     installer->set_install_source(extension->location());
   }
@@ -575,8 +553,13 @@ bool ExtensionService::UpdateExtension(const std::string& id,
   if (extension && extension->was_installed_by_oem())
     creation_flags |= Extension::WAS_INSTALLED_BY_OEM;
 
-  if (extension && extension->is_ephemeral())
-    creation_flags |= Extension::IS_EPHEMERAL;
+  if (extension && extension->was_installed_by_custodian())
+    creation_flags |= Extension::WAS_INSTALLED_BY_CUSTODIAN;
+
+  if (extension) {
+    installer->set_is_ephemeral(extension_prefs_->IsEphemeralApp(id));
+    installer->set_do_not_sync(extension_prefs_->DoNotSync(id));
+  }
 
   installer->set_creation_flags(creation_flags);
 
@@ -590,20 +573,34 @@ bool ExtensionService::UpdateExtension(const std::string& id,
   return true;
 }
 
-void ExtensionService::ReloadExtension(const std::string extension_id) {
+void ExtensionService::ReloadExtensionImpl(
+    // "transient" because the process of reloading may cause the reference
+    // to become invalid. Instead, use |extension_id|, a copy.
+    const std::string& transient_extension_id,
+    bool be_noisy) {
   CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   // If the extension is already reloading, don't reload again.
-  if (extension_prefs_->GetDisableReasons(extension_id) &
+  if (extension_prefs_->GetDisableReasons(transient_extension_id) &
       Extension::DISABLE_RELOAD) {
     return;
   }
 
+  // Ignore attempts to reload a blacklisted extension. Sometimes this can
+  // happen in a convoluted reload sequence triggered by the termination of a
+  // blacklisted extension and a naive attempt to reload it. For an example see
+  // http://crbug.com/373842.
+  if (registry_->blacklisted_extensions().Contains(transient_extension_id))
+    return;
+
   base::FilePath path;
-  const Extension* current_extension = GetExtensionById(extension_id, false);
+
+  std::string extension_id = transient_extension_id;
+  const Extension* transient_current_extension =
+      GetExtensionById(extension_id, false);
 
   // Disable the extension if it's loaded. It might not be loaded if it crashed.
-  if (current_extension) {
+  if (transient_current_extension) {
     // If the extension has an inspector open for its background page, detach
     // the inspector and hang onto a cookie for it, so that we can reattach
     // later.
@@ -611,23 +608,31 @@ void ExtensionService::ReloadExtension(const std::string extension_id) {
     extensions::ProcessManager* manager = system_->process_manager();
     extensions::ExtensionHost* host =
         manager->GetBackgroundHostForExtension(extension_id);
-    if (host && DevToolsAgentHost::HasFor(host->render_view_host())) {
+    if (host && DevToolsAgentHost::HasFor(host->host_contents())) {
       // Look for an open inspector for the background page.
       scoped_refptr<DevToolsAgentHost> agent_host =
-          DevToolsAgentHost::GetOrCreateFor(host->render_view_host());
-      agent_host->DisconnectRenderViewHost();
+          DevToolsAgentHost::GetOrCreateFor(host->host_contents());
+      agent_host->DisconnectWebContents();
       orphaned_dev_tools_[extension_id] = agent_host;
     }
 
-    path = current_extension->path();
+    path = transient_current_extension->path();
     // BeingUpgraded is set back to false when the extension is added.
-    system_->runtime_data()->SetBeingUpgraded(current_extension, true);
+    system_->runtime_data()->SetBeingUpgraded(transient_current_extension,
+                                              true);
     DisableExtension(extension_id, Extension::DISABLE_RELOAD);
     reloading_extensions_.insert(extension_id);
   } else {
+    std::map<std::string, base::FilePath>::const_iterator iter =
+        unloaded_extension_paths_.find(extension_id);
+    if (iter == unloaded_extension_paths_.end()) {
+      return;
+    }
     path = unloaded_extension_paths_[extension_id];
   }
 
+  transient_current_extension = NULL;
+
   if (delayed_installs_.Contains(extension_id)) {
     FinishDelayedInstallation(extension_id);
     return;
@@ -636,15 +641,12 @@ void ExtensionService::ReloadExtension(const std::string extension_id) {
   // If we're reloading a component extension, use the component extension
   // loader's reloader.
   if (component_loader_->Exists(extension_id)) {
-    SetBeingReloaded(extension_id, true);
     component_loader_->Reload(extension_id);
-    SetBeingReloaded(extension_id, false);
     return;
   }
 
   // Check the installed extensions to see if what we're reloading was already
   // installed.
-  SetBeingReloaded(extension_id, true);
   scoped_ptr<ExtensionInfo> installed_extension(
       extension_prefs_->GetInstalledExtensionInfo(extension_id));
   if (installed_extension.get() &&
@@ -655,18 +657,33 @@ void ExtensionService::ReloadExtension(const std::string extension_id) {
     // We should always be able to remember the extension's path. If it's not in
     // the map, someone failed to update |unloaded_extension_paths_|.
     CHECK(!path.empty());
-    extensions::UnpackedInstaller::Create(this)->Load(path);
+    scoped_refptr<extensions::UnpackedInstaller> unpacked_installer =
+        extensions::UnpackedInstaller::Create(this);
+    unpacked_installer->set_be_noisy_on_failure(be_noisy);
+    unpacked_installer->Load(path);
   }
-  // When reloading is done, mark this extension as done reloading.
-  SetBeingReloaded(extension_id, false);
 }
 
-bool ExtensionService::UninstallExtension(const std::string& extension_id,
-                                          bool external_uninstall,
-                                          base::string16* error) {
+void ExtensionService::ReloadExtension(const std::string& extension_id) {
+  ReloadExtensionImpl(extension_id, true); // be_noisy
+}
+
+void ExtensionService::ReloadExtensionWithQuietFailure(
+    const std::string& extension_id) {
+  ReloadExtensionImpl(extension_id, false); // be_noisy
+}
+
+bool ExtensionService::UninstallExtension(
+    // "transient" because the process of uninstalling may cause the reference
+    // to become invalid. Instead, use |extenson->id()|.
+    const std::string& transient_extension_id,
+    extensions::UninstallReason reason,
+    const base::Closure& deletion_done_callback,
+    base::string16* error) {
   CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
-  scoped_refptr<const Extension> extension(GetInstalledExtension(extension_id));
+  scoped_refptr<const Extension> extension =
+      GetInstalledExtension(transient_extension_id);
 
   // Callers should not send us nonexistent extensions.
   CHECK(extension.get());
@@ -680,79 +697,77 @@ bool ExtensionService::UninstallExtension(const std::string& extension_id,
   // TODO(rdevlin.cronin): This is probably not right. We should do something
   // else, like include an enum IS_INTERNAL_UNINSTALL or IS_USER_UNINSTALL so
   // we don't do this.
+  bool external_uninstall =
+      (reason == extensions::UNINSTALL_REASON_INTERNAL_MANAGEMENT) ||
+      (reason == extensions::UNINSTALL_REASON_REINSTALL) ||
+      (reason == extensions::UNINSTALL_REASON_ORPHANED_EXTERNAL_EXTENSION) ||
+      (reason == extensions::UNINSTALL_REASON_ORPHANED_SHARED_MODULE) ||
+      (reason == extensions::UNINSTALL_REASON_SYNC &&
+           extension->was_installed_by_custodian());
   if (!external_uninstall &&
       !system_->management_policy()->UserMayModifySettings(
         extension.get(), error)) {
     content::NotificationService::current()->Notify(
-        chrome::NOTIFICATION_EXTENSION_UNINSTALL_NOT_ALLOWED,
+        extensions::NOTIFICATION_EXTENSION_UNINSTALL_NOT_ALLOWED,
         content::Source<Profile>(profile_),
         content::Details<const Extension>(extension.get()));
     return false;
   }
 
   syncer::SyncChange sync_change;
-  if (extension_sync_service_) {
+  // Don't sync the uninstall if we're going to reinstall the extension
+  // momentarily.
+  if (extension_sync_service_ &&
+      reason != extensions::UNINSTALL_REASON_REINSTALL) {
      sync_change = extension_sync_service_->PrepareToSyncUninstallExtension(
         extension.get(), is_ready());
   }
 
   system_->install_verifier()->Remove(extension->id());
 
-  if (IsUnacknowledgedExternalExtension(extension.get())) {
-    UMA_HISTOGRAM_ENUMERATION("Extensions.ExternalExtensionEvent",
-                              EXTERNAL_EXTENSION_UNINSTALLED,
-                              EXTERNAL_EXTENSION_BUCKET_BOUNDARY);
-    if (extensions::ManifestURL::UpdatesFromGallery(extension.get())) {
-      UMA_HISTOGRAM_ENUMERATION("Extensions.ExternalExtensionEventWebstore",
-                                EXTERNAL_EXTENSION_UNINSTALLED,
-                                EXTERNAL_EXTENSION_BUCKET_BOUNDARY);
-    } else {
-      UMA_HISTOGRAM_ENUMERATION("Extensions.ExternalExtensionEventNonWebstore",
-                                EXTERNAL_EXTENSION_UNINSTALLED,
-                                EXTERNAL_EXTENSION_BUCKET_BOUNDARY);
-    }
-  }
   UMA_HISTOGRAM_ENUMERATION("Extensions.UninstallType",
                             extension->GetType(), 100);
   RecordPermissionMessagesHistogram(extension.get(),
-                                    "Extensions.Permissions_Uninstall");
+                                    "Extensions.Permissions_Uninstall2");
 
   // Unload before doing more cleanup to ensure that nothing is hanging on to
   // any of these resources.
-  UnloadExtension(extension_id, UnloadedExtensionInfo::REASON_UNINSTALL);
+  UnloadExtension(extension->id(), UnloadedExtensionInfo::REASON_UNINSTALL);
 
   // Tell the backend to start deleting installed extensions on the file thread.
   if (!Manifest::IsUnpackedLocation(extension->location())) {
     if (!GetFileTaskRunner()->PostTask(
             FROM_HERE,
-            base::Bind(&extensions::file_util::UninstallExtension,
+            base::Bind(&ExtensionService::UninstallExtensionOnFileThread,
+                       extension->id(),
+                       profile_,
                        install_directory_,
-                       extension_id)))
+                       extension->path())))
       NOTREACHED();
   }
 
-  // Do not remove the data of ephemeral apps. They will be garbage collected by
-  // EphemeralAppService.
-  if (!extension->is_ephemeral())
-    extensions::DataDeleter::StartDeleting(profile_, extension.get());
+  extensions::DataDeleter::StartDeleting(
+      profile_, extension.get(), deletion_done_callback);
 
-  UntrackTerminatedExtension(extension_id);
+  UntrackTerminatedExtension(extension->id());
 
   // Notify interested parties that we've uninstalled this extension.
   content::NotificationService::current()->Notify(
-      chrome::NOTIFICATION_EXTENSION_UNINSTALLED,
+      extensions::NOTIFICATION_EXTENSION_UNINSTALLED_DEPRECATED,
       content::Source<Profile>(profile_),
       content::Details<const Extension>(extension.get()));
+  ExtensionRegistry::Get(profile_)
+      ->TriggerOnUninstalled(extension.get(), reason);
 
-  if (extension_sync_service_) {
-    extension_sync_service_->ProcessSyncUninstallExtension(extension_id,
+  if (sync_change.IsValid()) {
+    extension_sync_service_->ProcessSyncUninstallExtension(extension->id(),
                                                            sync_change);
   }
 
-  delayed_installs_.Remove(extension_id);
+  delayed_installs_.Remove(extension->id());
 
-  extension_prefs_->OnExtensionUninstalled(extension_id, extension->location(),
-                                           external_uninstall);
+  extension_prefs_->OnExtensionUninstalled(
+      extension->id(), extension->location(), external_uninstall);
 
   // Track the uninstallation.
   UMA_HISTOGRAM_ENUMERATION("Extensions.ExtensionUninstalled", 1, 2);
@@ -760,6 +775,17 @@ bool ExtensionService::UninstallExtension(const std::string& extension_id,
   return true;
 }
 
+// static
+void ExtensionService::UninstallExtensionOnFileThread(
+    const std::string& id,
+    Profile* profile,
+    const base::FilePath& install_dir,
+    const base::FilePath& extension_path) {
+  extensions::ExtensionAssetsManager* assets_manager =
+      extensions::ExtensionAssetsManager::GetInstance();
+  assets_manager->UninstallExtension(id, profile, install_dir, extension_path);
+}
+
 bool ExtensionService::IsExtensionEnabled(
     const std::string& extension_id) const {
   if (registry_->enabled_extensions().Contains(extension_id) ||
@@ -775,6 +801,7 @@ bool ExtensionService::IsExtensionEnabled(
   // If the extension hasn't been loaded yet, check the prefs for it. Assume
   // enabled unless otherwise noted.
   return !extension_prefs_->IsExtensionDisabled(extension_id) &&
+         !extension_prefs_->IsExtensionBlacklisted(extension_id) &&
          !extension_prefs_->IsExternalExtensionUninstalled(extension_id);
 }
 
@@ -800,22 +827,6 @@ void ExtensionService::EnableExtension(const std::string& extension_id) {
   if (!extension)
     return;
 
-  if (IsUnacknowledgedExternalExtension(extension)) {
-    UMA_HISTOGRAM_ENUMERATION("Extensions.ExternalExtensionEvent",
-                              EXTERNAL_EXTENSION_REENABLED,
-                              EXTERNAL_EXTENSION_BUCKET_BOUNDARY);
-    if (extensions::ManifestURL::UpdatesFromGallery(extension)) {
-      UMA_HISTOGRAM_ENUMERATION("Extensions.ExternalExtensionEventWebstore",
-                                EXTERNAL_EXTENSION_REENABLED,
-                                EXTERNAL_EXTENSION_BUCKET_BOUNDARY);
-    } else {
-      UMA_HISTOGRAM_ENUMERATION("Extensions.ExternalExtensionEventNonWebstore",
-                                EXTERNAL_EXTENSION_REENABLED,
-                                EXTERNAL_EXTENSION_BUCKET_BOUNDARY);
-    }
-    AcknowledgeExternalExtension(extension->id());
-  }
-
   // Move it over to the enabled list.
   registry_->AddEnabled(make_scoped_refptr(extension));
   registry_->RemoveDisabled(extension->id());
@@ -824,7 +835,7 @@ void ExtensionService::EnableExtension(const std::string& extension_id) {
 
   // Notify listeners that the extension was enabled.
   content::NotificationService::current()->Notify(
-      chrome::NOTIFICATION_EXTENSION_ENABLED,
+      extensions::NOTIFICATION_EXTENSION_ENABLED,
       content::Source<Profile>(profile_),
       content::Details<const Extension>(extension));
 
@@ -837,16 +848,22 @@ void ExtensionService::DisableExtension(
     Extension::DisableReason disable_reason) {
   CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
-  // The extension may have been disabled already.
-  if (!IsExtensionEnabled(extension_id))
+  // The extension may have been disabled already. Just add a disable reason.
+  if (!IsExtensionEnabled(extension_id)) {
+    extension_prefs_->AddDisableReason(extension_id, disable_reason);
     return;
+  }
 
   const Extension* extension = GetInstalledExtension(extension_id);
   // |extension| can be NULL if sync disables an extension that is not
   // installed yet.
+  // EXTERNAL_COMPONENT extensions are not generally modifiable by users, but
+  // can be uninstalled by the browser if the user sets extension-specific
+  // preferences.
   if (extension &&
       disable_reason != Extension::DISABLE_RELOAD &&
-      !system_->management_policy()->UserMayModifySettings(extension, NULL)) {
+      !system_->management_policy()->UserMayModifySettings(extension, NULL) &&
+      extension->location() != Manifest::EXTERNAL_COMPONENT) {
     return;
   }
 
@@ -883,19 +900,16 @@ void ExtensionService::DisableUserExtensions(
       system_->management_policy();
   extensions::ExtensionList to_disable;
 
-  // TODO(rlp): Clean up this code. crbug.com/353266.
   const ExtensionSet& enabled_set = registry_->enabled_extensions();
   for (ExtensionSet::const_iterator extension = enabled_set.begin();
       extension != enabled_set.end(); ++extension) {
-    if (management_policy->UserMayModifySettings(extension->get(), NULL) &&
-        extension->get()->location() != Manifest::EXTERNAL_COMPONENT)
+    if (management_policy->UserMayModifySettings(extension->get(), NULL))
       to_disable.push_back(*extension);
   }
   const ExtensionSet& terminated_set = registry_->terminated_extensions();
   for (ExtensionSet::const_iterator extension = terminated_set.begin();
       extension != terminated_set.end(); ++extension) {
-    if (management_policy->UserMayModifySettings(extension->get(), NULL) &&
-        extension->get()->location() != Manifest::EXTERNAL_COMPONENT)
+    if (management_policy->UserMayModifySettings(extension->get(), NULL))
       to_disable.push_back(*extension);
   }
 
@@ -903,7 +917,7 @@ void ExtensionService::DisableUserExtensions(
       extension != to_disable.end(); ++extension) {
     if ((*extension)->was_installed_by_default() &&
         extension_urls::IsWebstoreUpdateUrl(
-            extensions::ManifestURL::GetUpdateURL(*extension)))
+            extensions::ManifestURL::GetUpdateURL(extension->get())))
       continue;
     const std::string& id = (*extension)->id();
     if (except_ids.end() == std::find(except_ids.begin(), except_ids.end(), id))
@@ -914,16 +928,15 @@ void ExtensionService::DisableUserExtensions(
 void ExtensionService::GrantPermissionsAndEnableExtension(
     const Extension* extension) {
   GrantPermissions(extension);
-  RecordPermissionMessagesHistogram(
-      extension, "Extensions.Permissions_ReEnable");
+  RecordPermissionMessagesHistogram(extension,
+                                    "Extensions.Permissions_ReEnable2");
   extension_prefs_->SetDidExtensionEscalatePermissions(extension, false);
   EnableExtension(extension->id());
 }
 
 void ExtensionService::GrantPermissions(const Extension* extension) {
   CHECK(extension);
-  extensions::PermissionsUpdater perms_updater(profile());
-  perms_updater.GrantActivePermissions(extension);
+  extensions::PermissionsUpdater(profile()).GrantActivePermissions(extension);
 }
 
 // static
@@ -939,7 +952,7 @@ void ExtensionService::RecordPermissionMessagesHistogram(
       base::HistogramBase::kUmaTargetedHistogramFlag);
 
   PermissionMessages permissions =
-      extensions::PermissionsData::GetPermissionMessages(extension);
+      extension->permissions_data()->GetPermissionMessages();
   if (permissions.empty()) {
     counter->Add(PermissionMessage::kNone);
   } else {
@@ -950,7 +963,7 @@ void ExtensionService::RecordPermissionMessagesHistogram(
 }
 
 void ExtensionService::NotifyExtensionLoaded(const Extension* extension) {
-  // The ChromeURLRequestContexts need to be first to know that the extension
+  // The URLRequestContexts need to be first to know that the extension
   // was loaded, otherwise a race can arise where a renderer that is created
   // for the extension may try to load an extension URL with an extension id
   // that the request context doesn't yet know about. The profile is responsible
@@ -988,7 +1001,7 @@ void ExtensionService::NotifyExtensionLoaded(const Extension* extension) {
   registry_->TriggerOnLoaded(extension);
 
   content::NotificationService::current()->Notify(
-      chrome::NOTIFICATION_EXTENSION_LOADED_DEPRECATED,
+      extensions::NOTIFICATION_EXTENSION_LOADED_DEPRECATED,
       content::Source<Profile>(profile_),
       content::Details<const Extension>(extension));
 
@@ -1002,31 +1015,30 @@ void ExtensionService::NotifyExtensionLoaded(const Extension* extension) {
   // ExtensionRegistryObserver. See http://crbug.com/355029.
   UpdateActiveExtensionsInCrashReporter();
 
+  const extensions::PermissionsData* permissions_data =
+      extension->permissions_data();
+
   // If the extension has permission to load chrome://favicon/ resources we need
   // to make sure that the FaviconSource is registered with the
   // ChromeURLDataManager.
-  if (extensions::PermissionsData::HasHostPermission(
-          extension, GURL(chrome::kChromeUIFaviconURL))) {
+  if (permissions_data->HasHostPermission(GURL(chrome::kChromeUIFaviconURL))) {
     FaviconSource* favicon_source = new FaviconSource(profile_,
                                                       FaviconSource::FAVICON);
     content::URLDataSource::Add(profile_, favicon_source);
   }
 
-#if !defined(OS_ANDROID)
   // Same for chrome://theme/ resources.
-  if (extensions::PermissionsData::HasHostPermission(
-          extension, GURL(chrome::kChromeUIThemeURL))) {
+  if (permissions_data->HasHostPermission(GURL(chrome::kChromeUIThemeURL))) {
     ThemeSource* theme_source = new ThemeSource(profile_);
     content::URLDataSource::Add(profile_, theme_source);
   }
 
   // Same for chrome://thumb/ resources.
-  if (extensions::PermissionsData::HasHostPermission(
-          extension, GURL(chrome::kChromeUIThumbnailURL))) {
+  if (permissions_data->HasHostPermission(
+          GURL(chrome::kChromeUIThumbnailURL))) {
     ThumbnailSource* thumbnail_source = new ThumbnailSource(profile_, false);
     content::URLDataSource::Add(profile_, thumbnail_source);
   }
-#endif
 }
 
 void ExtensionService::NotifyExtensionUnloaded(
@@ -1037,7 +1049,7 @@ void ExtensionService::NotifyExtensionUnloaded(
   registry_->TriggerOnUnloaded(extension, reason);
 
   content::NotificationService::current()->Notify(
-      chrome::NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED,
+      extensions::NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED,
       content::Source<Profile>(profile_),
       content::Details<UnloadedExtensionInfo>(&details));
 
@@ -1064,9 +1076,9 @@ void ExtensionService::NotifyExtensionUnloaded(
   // storage partition may get destroyed only after the extension gets unloaded.
   GURL site =
       extensions::util::GetSiteForExtensionId(extension->id(), profile_);
-  fileapi::FileSystemContext* filesystem_context =
-      BrowserContext::GetStoragePartitionForSite(profile_, site)->
-          GetFileSystemContext();
+  storage::FileSystemContext* filesystem_context =
+      BrowserContext::GetStoragePartitionForSite(profile_, site)
+          ->GetFileSystemContext();
   if (filesystem_context && filesystem_context->external_backend()) {
     filesystem_context->external_backend()->
         RevokeAccessForExtension(extension->id());
@@ -1079,10 +1091,6 @@ void ExtensionService::NotifyExtensionUnloaded(
   UpdateActiveExtensionsInCrashReporter();
 }
 
-Profile* ExtensionService::profile() {
-  return profile_;
-}
-
 content::BrowserContext* ExtensionService::GetBrowserContext() const {
   // Implemented in the .cc file to avoid adding a profile.h dependency to
   // extension_service.h.
@@ -1109,10 +1117,6 @@ base::SequencedTaskRunner* ExtensionService::GetFileTaskRunner() {
   return file_task_runner_.get();
 }
 
-extensions::ExtensionUpdater* ExtensionService::updater() {
-  return updater_.get();
-}
-
 void ExtensionService::CheckManagementPolicy() {
   std::vector<std::string> to_unload;
   std::map<std::string, Extension::DisableReason> to_disable;
@@ -1231,119 +1235,7 @@ void ExtensionService::OnAllExternalProvidersReady() {
 
   error_controller_->ShowErrorIfNeeded();
 
-  UpdateExternalExtensionAlert();
-}
-
-void ExtensionService::AcknowledgeExternalExtension(const std::string& id) {
-  extension_prefs_->AcknowledgeExternalExtension(id);
-  UpdateExternalExtensionAlert();
-}
-
-bool ExtensionService::IsUnacknowledgedExternalExtension(
-    const Extension* extension) {
-  if (!FeatureSwitch::prompt_for_external_extensions()->IsEnabled())
-    return false;
-
-  return (Manifest::IsExternalLocation(extension->location()) &&
-          !extension_prefs_->IsExternalExtensionAcknowledged(extension->id()) &&
-          !(extension_prefs_->GetDisableReasons(extension->id()) &
-                Extension::DISABLE_SIDELOAD_WIPEOUT));
-}
-
-void ExtensionService::ReconcileKnownDisabled() {
-  ExtensionIdSet known_disabled_ids;
-  if (!extension_prefs_->GetKnownDisabled(&known_disabled_ids)) {
-    extension_prefs_->SetKnownDisabled(
-        registry_->disabled_extensions().GetIDs());
-    UMA_HISTOGRAM_BOOLEAN("Extensions.KnownDisabledInitialized", true);
-    return;
-  }
-
-  // Both |known_disabled_ids| and |extensions| are ordered (by definition
-  // of std::map and std::set). Iterate forward over both sets in parallel
-  // to find matching IDs and disable the corresponding extensions.
-  const ExtensionSet& enabled_set = registry_->enabled_extensions();
-  ExtensionSet::const_iterator extensions_it = enabled_set.begin();
-  ExtensionIdSet::const_iterator known_disabled_ids_it =
-      known_disabled_ids.begin();
-  int known_disabled_count = 0;
-  while (extensions_it != enabled_set.end() &&
-         known_disabled_ids_it != known_disabled_ids.end()) {
-    const std::string& extension_id = extensions_it->get()->id();
-    const int comparison = extension_id.compare(*known_disabled_ids_it);
-    if (comparison < 0) {
-      ++extensions_it;
-    } else if (comparison > 0) {
-      ++known_disabled_ids_it;
-    } else {
-      ++known_disabled_count;
-      // Advance |extensions_it| immediately as it will be invalidated upon
-      // disabling the extension it points to.
-      ++extensions_it;
-      ++known_disabled_ids_it;
-      DisableExtension(extension_id, Extension::DISABLE_KNOWN_DISABLED);
-    }
-  }
-  UMA_HISTOGRAM_COUNTS_100("Extensions.KnownDisabledReDisabled",
-                           known_disabled_count);
-
-  // Update the list of known disabled to reflect every change to
-  // |disabled_extensions_| from this point forward.
-  registry_->SetDisabledModificationCallback(
-      base::Bind(&extensions::ExtensionPrefs::SetKnownDisabled,
-                 base::Unretained(extension_prefs_)));
-}
-
-void ExtensionService::UpdateExternalExtensionAlert() {
-  if (!FeatureSwitch::prompt_for_external_extensions()->IsEnabled())
-    return;
-
-  const Extension* extension = NULL;
-  const ExtensionSet& disabled_extensions = registry_->disabled_extensions();
-  for (ExtensionSet::const_iterator iter = disabled_extensions.begin();
-       iter != disabled_extensions.end(); ++iter) {
-    const Extension* e = iter->get();
-    if (IsUnacknowledgedExternalExtension(e)) {
-      extension = e;
-      break;
-    }
-  }
-
-  if (extension) {
-    if (!extensions::HasExternalInstallError(this)) {
-      if (extension_prefs_->IncrementAcknowledgePromptCount(extension->id()) >
-              kMaxExtensionAcknowledgePromptCount) {
-        // Stop prompting for this extension, and check if there's another
-        // one that needs prompting.
-        extension_prefs_->AcknowledgeExternalExtension(extension->id());
-        UpdateExternalExtensionAlert();
-        UMA_HISTOGRAM_ENUMERATION("Extensions.ExternalExtensionEvent",
-                                  EXTERNAL_EXTENSION_IGNORED,
-                                  EXTERNAL_EXTENSION_BUCKET_BOUNDARY);
-        if (extensions::ManifestURL::UpdatesFromGallery(extension)) {
-          UMA_HISTOGRAM_ENUMERATION(
-              "Extensions.ExternalExtensionEventWebstore",
-              EXTERNAL_EXTENSION_IGNORED,
-              EXTERNAL_EXTENSION_BUCKET_BOUNDARY);
-        } else {
-          UMA_HISTOGRAM_ENUMERATION(
-              "Extensions.ExternalExtensionEventNonWebstore",
-              EXTERNAL_EXTENSION_IGNORED,
-              EXTERNAL_EXTENSION_BUCKET_BOUNDARY);
-        }
-        return;
-      }
-      if (is_first_run_)
-        extension_prefs_->SetExternalInstallFirstRun(extension->id());
-      // first_run is true if the extension was installed during a first run
-      // (even if it's post-first run now).
-      bool first_run = extension_prefs_->IsExternalInstallFirstRun(
-          extension->id());
-      extensions::AddExternalInstallError(this, extension, first_run);
-    }
-  } else {
-    extensions::RemoveExternalInstallError(this);
-  }
+  external_install_manager_->UpdateExternalExtensionAlert();
 }
 
 void ExtensionService::UnloadExtension(
@@ -1386,7 +1278,7 @@ void ExtensionService::UnloadExtension(
   }
 
   content::NotificationService::current()->Notify(
-      chrome::NOTIFICATION_EXTENSION_REMOVED,
+      extensions::NOTIFICATION_EXTENSION_REMOVED,
       content::Source<Profile>(profile_),
       content::Details<const Extension>(extension.get()));
 }
@@ -1396,10 +1288,14 @@ void ExtensionService::RemoveComponentExtension(
   scoped_refptr<const Extension> extension(
       GetExtensionById(extension_id, false));
   UnloadExtension(extension_id, UnloadedExtensionInfo::REASON_UNINSTALL);
-  content::NotificationService::current()->Notify(
-      chrome::NOTIFICATION_EXTENSION_UNINSTALLED,
-      content::Source<Profile>(profile_),
-      content::Details<const Extension>(extension.get()));
+  if (extension.get()) {
+    content::NotificationService::current()->Notify(
+        extensions::NOTIFICATION_EXTENSION_UNINSTALLED_DEPRECATED,
+        content::Source<Profile>(profile_),
+        content::Details<const Extension>(extension.get()));
+    ExtensionRegistry::Get(profile_)->TriggerOnUninstalled(
+        extension.get(), extensions::UNINSTALL_REASON_INTERNAL_MANAGEMENT);
+  }
 }
 
 void ExtensionService::UnloadAllExtensionsForTest() {
@@ -1419,7 +1315,7 @@ void ExtensionService::ReloadExtensionsForTest() {
 void ExtensionService::SetReadyAndNotifyListeners() {
   ready_->Signal();
   content::NotificationService::current()->Notify(
-      chrome::NOTIFICATION_EXTENSIONS_READY,
+      extensions::NOTIFICATION_EXTENSIONS_READY_DEPRECATED,
       content::Source<Profile>(profile_),
       content::NotificationService::NoDetails());
 }
@@ -1488,15 +1384,21 @@ void ExtensionService::AddExtension(const Extension* extension) {
     if (extension_sync_service_)
       extension_sync_service_->SyncExtensionChangeIfNeeded(*extension);
     content::NotificationService::current()->Notify(
-        chrome::NOTIFICATION_EXTENSION_UPDATE_DISABLED,
+        extensions::NOTIFICATION_EXTENSION_UPDATE_DISABLED,
         content::Source<Profile>(profile_),
         content::Details<const Extension>(extension));
 
-    // Show the extension disabled error if a permissions increase was the
-    // only reason it was disabled.
-    if (extension_prefs_->GetDisableReasons(extension->id()) ==
-        Extension::DISABLE_PERMISSIONS_INCREASE) {
-      extensions::AddExtensionDisabledError(this, extension);
+    // Show the extension disabled error if a permissions increase or a remote
+    // installation is the reason it was disabled, and no other reasons exist.
+    int reasons = extension_prefs_->GetDisableReasons(extension->id());
+    const int kReasonMask = Extension::DISABLE_PERMISSIONS_INCREASE |
+                            Extension::DISABLE_REMOTE_INSTALL;
+    if (reasons & kReasonMask && !(reasons & ~kReasonMask)) {
+      extensions::AddExtensionDisabledError(
+          this,
+          extension,
+          extension_prefs_->HasDisableReason(
+              extension->id(), Extension::DISABLE_REMOTE_INSTALL));
     }
   } else if (reloading) {
     // Replace the old extension with the new version.
@@ -1506,11 +1408,14 @@ void ExtensionService::AddExtension(const Extension* extension) {
     // All apps that are displayed in the launcher are ordered by their ordinals
     // so we must ensure they have valid ordinals.
     if (extension->RequiresSortOrdinal()) {
-      if (!extension->ShouldDisplayInNewTabPage()) {
-        extension_prefs_->app_sorting()->MarkExtensionAsHidden(extension->id());
+      extension_prefs_->app_sorting()->SetExtensionVisible(
+          extension->id(),
+          extension->ShouldDisplayInNewTabPage() &&
+              !extension_prefs_->IsEphemeralApp(extension->id()));
+      if (!extension_prefs_->IsEphemeralApp(extension->id())) {
+        extension_prefs_->app_sorting()->EnsureValidOrdinals(
+            extension->id(), syncer::StringOrdinal());
       }
-      extension_prefs_->app_sorting()->EnsureValidOrdinals(
-          extension->id(), syncer::StringOrdinal());
     }
 
     registry_->AddEnabled(extension);
@@ -1533,8 +1438,8 @@ void ExtensionService::AddComponentExtension(const Extension* extension) {
         << old_version_string << "' to " << extension->version()->GetString();
 
     AddNewOrUpdatedExtension(extension,
-                             Extension::ENABLED_COMPONENT,
-                             extensions::NOT_BLACKLISTED,
+                             Extension::ENABLED,
+                             extensions::kInstallFlagNone,
                              syncer::StringOrdinal(),
                              std::string());
     return;
@@ -1543,41 +1448,9 @@ void ExtensionService::AddComponentExtension(const Extension* extension) {
   AddExtension(extension);
 }
 
-void ExtensionService::UpdateActivePermissions(const Extension* extension) {
-  // If the extension has used the optional permissions API, it will have a
-  // custom set of active permissions defined in the extension prefs. Here,
-  // we update the extension's active permissions based on the prefs.
-  scoped_refptr<PermissionSet> active_permissions =
-      extension_prefs_->GetActivePermissions(extension->id());
-
-  if (active_permissions.get()) {
-    // We restrict the active permissions to be within the bounds defined in the
-    // extension's manifest.
-    //  a) active permissions must be a subset of optional + default permissions
-    //  b) active permissions must contains all default permissions
-    scoped_refptr<PermissionSet> total_permissions =
-        PermissionSet::CreateUnion(
-            extensions::PermissionsData::GetRequiredPermissions(extension),
-            extensions::PermissionsData::GetOptionalPermissions(extension));
-
-    // Make sure the active permissions contain no more than optional + default.
-    scoped_refptr<PermissionSet> adjusted_active =
-        PermissionSet::CreateIntersection(
-            total_permissions.get(), active_permissions.get());
-
-    // Make sure the active permissions contain the default permissions.
-    adjusted_active = PermissionSet::CreateUnion(
-        extensions::PermissionsData::GetRequiredPermissions(extension),
-        adjusted_active.get());
-
-    extensions::PermissionsUpdater perms_updater(profile());
-    perms_updater.UpdateActivePermissions(extension, adjusted_active.get());
-  }
-}
-
 void ExtensionService::CheckPermissionsIncrease(const Extension* extension,
                                                 bool is_extension_installed) {
-  UpdateActivePermissions(extension);
+  extensions::PermissionsUpdater(profile_).InitializePermissions(extension);
 
   // We keep track of all permissions the user has granted each extension.
   // This allows extensions to gracefully support backwards compatibility
@@ -1629,9 +1502,9 @@ void ExtensionService::CheckPermissionsIncrease(const Extension* extension,
     // to a version that requires additional privileges.
     is_privilege_increase =
         extensions::PermissionMessageProvider::Get()->IsPrivilegeIncrease(
-                granted_permissions,
-                extension->GetActivePermissions().get(),
-                extension->GetType());
+            granted_permissions.get(),
+            extension->permissions_data()->active_permissions().get(),
+            extension->GetType());
   }
 
   if (is_extension_installed) {
@@ -1658,12 +1531,17 @@ void ExtensionService::CheckPermissionsIncrease(const Extension* extension,
   }
 
   // Extension has changed permissions significantly. Disable it. A
-  // notification should be sent by the caller.
-  if (is_privilege_increase) {
+  // notification should be sent by the caller. If the extension is already
+  // disabled because it was installed remotely, don't add another disable
+  // reason, but instead always set the "did escalate permissions" flag, to
+  // ensure enabling it will always show a warning.
+  if (disable_reasons == Extension::DISABLE_REMOTE_INSTALL) {
+    extension_prefs_->SetDidExtensionEscalatePermissions(extension, true);
+  } else if (is_privilege_increase) {
     disable_reasons |= Extension::DISABLE_PERMISSIONS_INCREASE;
     if (!extension_prefs_->DidExtensionEscalatePermissions(extension->id())) {
-      RecordPermissionMessagesHistogram(
-          extension, "Extensions.Permissions_AutoDisable");
+      RecordPermissionMessagesHistogram(extension,
+                                        "Extensions.Permissions_AutoDisable2");
     }
     extension_prefs_->SetExtensionState(extension->id(), Extension::DISABLED);
     extension_prefs_->SetDidExtensionEscalatePermissions(extension, true);
@@ -1694,16 +1572,15 @@ void ExtensionService::UpdateActiveExtensionsInCrashReporter() {
 void ExtensionService::OnExtensionInstalled(
     const Extension* extension,
     const syncer::StringOrdinal& page_ordinal,
-    bool has_requirement_errors,
-    extensions::BlacklistState blacklist_state,
-    bool wait_for_idle) {
+    int install_flags) {
   CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   const std::string& id = extension->id();
   bool initial_enable = ShouldEnableOnInstall(extension);
   std::string install_parameter;
-  const extensions::PendingExtensionInfo* pending_extension_info = NULL;
-  if ((pending_extension_info = pending_extension_manager()->GetById(id))) {
+  const extensions::PendingExtensionInfo* pending_extension_info =
+      pending_extension_manager()->GetById(id);
+  if (pending_extension_info) {
     if (!pending_extension_info->ShouldAllowInstall(extension)) {
       pending_extension_manager()->Remove(id);
 
@@ -1737,7 +1614,7 @@ void ExtensionService::OnExtensionInstalled(
   }
 
   // Unsupported requirements overrides the management policy.
-  if (has_requirement_errors) {
+  if (install_flags & extensions::kInstallFlagHasRequirementErrors) {
     initial_enable = false;
     extension_prefs_->AddDisableReason(
         id, Extension::DISABLE_UNSUPPORTED_REQUIREMENT);
@@ -1750,7 +1627,7 @@ void ExtensionService::OnExtensionInstalled(
     extension_prefs_->ClearDisableReasons(id);
   }
 
-  if (blacklist_state == extensions::BLACKLISTED_MALWARE) {
+  if (install_flags & extensions::kInstallFlagIsBlacklistedForMalware) {
     // Installation of a blacklisted extension can happen from sync, policy,
     // etc, where to maintain consistency we need to install it, just never
     // load it (see AddExtension). Usually it should be the job of callers to
@@ -1767,29 +1644,30 @@ void ExtensionService::OnExtensionInstalled(
                               extension->GetType(), 100);
     UMA_HISTOGRAM_ENUMERATION("Extensions.InstallSource",
                               extension->location(), Manifest::NUM_LOCATIONS);
-    RecordPermissionMessagesHistogram(
-        extension, "Extensions.Permissions_Install");
+    RecordPermissionMessagesHistogram(extension,
+                                      "Extensions.Permissions_Install2");
   } else {
     UMA_HISTOGRAM_ENUMERATION("Extensions.UpdateType",
                               extension->GetType(), 100);
     UMA_HISTOGRAM_ENUMERATION("Extensions.UpdateSource",
                               extension->location(), Manifest::NUM_LOCATIONS);
+
+    // A fully installed app cannot be demoted to an ephemeral app.
+    if ((install_flags & extensions::kInstallFlagIsEphemeral) &&
+        !extension_prefs_->IsEphemeralApp(id)) {
+      install_flags &= ~static_cast<int>(extensions::kInstallFlagIsEphemeral);
+    }
   }
 
-  // Certain extension locations are specific enough that we can
-  // auto-acknowledge any extension that came from one of them.
-  if (Manifest::IsPolicyLocation(extension->location()) ||
-      extension->location() == Manifest::EXTERNAL_COMPONENT)
-    AcknowledgeExternalExtension(extension->id());
   const Extension::State initial_state =
       initial_enable ? Extension::ENABLED : Extension::DISABLED;
-  const bool blacklisted_for_malware =
-      blacklist_state == extensions::BLACKLISTED_MALWARE;
-  if (ShouldDelayExtensionUpdate(id, wait_for_idle)) {
+  if (ShouldDelayExtensionUpdate(
+          id,
+          !!(install_flags & extensions::kInstallFlagInstallImmediately))) {
     extension_prefs_->SetDelayedInstallInfo(
         extension,
         initial_state,
-        blacklisted_for_malware,
+        install_flags,
         extensions::ExtensionPrefs::DELAY_REASON_WAIT_FOR_IDLE,
         page_ordinal,
         install_parameter);
@@ -1809,7 +1687,7 @@ void ExtensionService::OnExtensionInstalled(
     extension_prefs_->SetDelayedInstallInfo(
         extension,
         initial_state,
-        blacklisted_for_malware,
+        install_flags,
         extensions::ExtensionPrefs::DELAY_REASON_GC,
         page_ordinal,
         install_parameter);
@@ -1819,7 +1697,7 @@ void ExtensionService::OnExtensionInstalled(
       extension_prefs_->SetDelayedInstallInfo(
           extension,
           initial_state,
-          blacklisted_for_malware,
+          install_flags,
           extensions::ExtensionPrefs::DELAY_REASON_WAIT_FOR_IMPORTS,
           page_ordinal,
           install_parameter);
@@ -1828,30 +1706,31 @@ void ExtensionService::OnExtensionInstalled(
   } else {
     AddNewOrUpdatedExtension(extension,
                              initial_state,
-                             blacklist_state,
+                             install_flags,
                              page_ordinal,
                              install_parameter);
   }
 }
 
+void ExtensionService::OnExtensionManagementSettingsChanged() {
+  error_controller_->ShowErrorIfNeeded();
+  CheckManagementPolicy();
+}
+
 void ExtensionService::AddNewOrUpdatedExtension(
     const Extension* extension,
     Extension::State initial_state,
-    extensions::BlacklistState blacklist_state,
+    int install_flags,
     const syncer::StringOrdinal& page_ordinal,
     const std::string& install_parameter) {
   CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-  const bool blacklisted_for_malware =
-      blacklist_state == extensions::BLACKLISTED_MALWARE;
-  extension_prefs_->OnExtensionInstalled(extension,
-                                         initial_state,
-                                         blacklisted_for_malware,
-                                         page_ordinal,
-                                         install_parameter);
+  bool was_ephemeral = extension_prefs_->IsEphemeralApp(extension->id());
+  extension_prefs_->OnExtensionInstalled(
+      extension, initial_state, page_ordinal, install_flags, install_parameter);
   delayed_installs_.Remove(extension->id());
   if (InstallVerifier::NeedsVerification(*extension))
     system_->install_verifier()->VerifyExtension(extension->id());
-  FinishInstallation(extension);
+  FinishInstallation(extension, was_ephemeral);
 }
 
 void ExtensionService::MaybeFinishDelayedInstallation(
@@ -1896,13 +1775,15 @@ void ExtensionService::FinishDelayedInstallation(
   CHECK(extension.get());
   delayed_installs_.Remove(extension_id);
 
+  bool was_ephemeral = extension_prefs_->IsEphemeralApp(extension->id());
   if (!extension_prefs_->FinishDelayedInstallInfo(extension_id))
     NOTREACHED();
 
-  FinishInstallation(extension.get());
+  FinishInstallation(extension.get(), was_ephemeral);
 }
 
-void ExtensionService::FinishInstallation(const Extension* extension) {
+void ExtensionService::FinishInstallation(
+    const Extension* extension, bool was_ephemeral) {
   const extensions::Extension* existing_extension =
       GetInstalledExtension(extension->id());
   bool is_update = false;
@@ -1911,13 +1792,17 @@ void ExtensionService::FinishInstallation(const Extension* extension) {
     is_update = true;
     old_name = existing_extension->name();
   }
-  extensions::InstalledExtensionInfo details(extension, is_update, old_name);
+  bool from_ephemeral =
+      was_ephemeral && !extension_prefs_->IsEphemeralApp(extension->id());
+  extensions::InstalledExtensionInfo details(
+      extension, is_update, from_ephemeral, old_name);
   content::NotificationService::current()->Notify(
-      chrome::NOTIFICATION_EXTENSION_INSTALLED,
+      extensions::NOTIFICATION_EXTENSION_WILL_BE_INSTALLED_DEPRECATED,
       content::Source<Profile>(profile_),
       content::Details<const extensions::InstalledExtensionInfo>(&details));
 
-  bool unacknowledged_external = IsUnacknowledgedExternalExtension(extension);
+  registry_->TriggerOnWillBeInstalled(
+      extension, is_update, from_ephemeral, old_name);
 
   // Unpacked extensions default to allowing file access, but if that has been
   // overridden, don't reset the value.
@@ -1928,30 +1813,86 @@ void ExtensionService::FinishInstallation(const Extension* extension) {
 
   AddExtension(extension);
 
-  // If this is a new external extension that was disabled, alert the user
-  // so he can reenable it. We do this last so that it has already been
-  // added to our list of extensions.
-  if (unacknowledged_external && !is_update) {
-    UpdateExternalExtensionAlert();
-    UMA_HISTOGRAM_ENUMERATION("Extensions.ExternalExtensionEvent",
-                              EXTERNAL_EXTENSION_INSTALLED,
-                              EXTERNAL_EXTENSION_BUCKET_BOUNDARY);
-    if (extensions::ManifestURL::UpdatesFromGallery(extension)) {
-      UMA_HISTOGRAM_ENUMERATION("Extensions.ExternalExtensionEventWebstore",
-                                EXTERNAL_EXTENSION_INSTALLED,
-                                EXTERNAL_EXTENSION_BUCKET_BOUNDARY);
-    } else {
-      UMA_HISTOGRAM_ENUMERATION("Extensions.ExternalExtensionEventNonWebstore",
-                                EXTERNAL_EXTENSION_INSTALLED,
-                                EXTERNAL_EXTENSION_BUCKET_BOUNDARY);
-    }
-  }
+  // Notify observers that need to know when an installation is complete.
+  registry_->TriggerOnInstalled(extension, is_update);
 
   // Check extensions that may have been delayed only because this shared module
   // was not available.
-  if (SharedModuleInfo::IsSharedModule(extension)) {
+  if (SharedModuleInfo::IsSharedModule(extension))
     MaybeFinishDelayedInstallations();
+}
+
+void ExtensionService::PromoteEphemeralApp(
+    const extensions::Extension* extension, bool is_from_sync) {
+  DCHECK(GetInstalledExtension(extension->id()) &&
+         extension_prefs_->IsEphemeralApp(extension->id()));
+
+  if (extension->RequiresSortOrdinal()) {
+    extension_prefs_->app_sorting()->SetExtensionVisible(
+        extension->id(), extension->ShouldDisplayInNewTabPage());
+
+    if (!is_from_sync) {
+      // Reset the sort ordinals of the app to ensure it is added to the default
+      // position, like newly installed apps would.
+      extension_prefs_->app_sorting()->ClearOrdinals(extension->id());
+    }
+
+    extension_prefs_->app_sorting()->EnsureValidOrdinals(
+        extension->id(), syncer::StringOrdinal());
+  }
+
+  // Remove the ephemeral flags from the preferences.
+  extension_prefs_->OnEphemeralAppPromoted(extension->id());
+
+  // Fire install-related events to allow observers to handle the promotion
+  // of the ephemeral app.
+  extensions::InstalledExtensionInfo details(
+      extension,
+      true /* is update */,
+      true /* from ephemeral */,
+      extension->name() /* old name */);
+  content::NotificationService::current()->Notify(
+      extensions::NOTIFICATION_EXTENSION_WILL_BE_INSTALLED_DEPRECATED,
+      content::Source<Profile>(profile_),
+      content::Details<const extensions::InstalledExtensionInfo>(&details));
+
+  registry_->TriggerOnWillBeInstalled(
+      extension,
+      true /* is update */,
+      true /* from ephemeral */,
+      extension->name() /* old name */);
+
+  if (registry_->enabled_extensions().Contains(extension->id())) {
+    // If the app is already enabled and loaded, fire the load events to allow
+    // observers to handle the promotion of the ephemeral app.
+    content::NotificationService::current()->Notify(
+        extensions::NOTIFICATION_EXTENSION_LOADED_DEPRECATED,
+        content::Source<Profile>(profile_),
+        content::Details<const Extension>(extension));
+
+    registry_->TriggerOnLoaded(extension);
+  } else {
+    // Cached ephemeral apps may be updated and disabled due to permissions
+    // increase. The app can be enabled (as long as no other disable reasons
+    // exist) as the install was user-acknowledged.
+    int disable_mask = Extension::DISABLE_NONE;
+    if (!is_from_sync)
+      disable_mask |= Extension::DISABLE_PERMISSIONS_INCREASE;
+
+    int other_disable_reasons =
+        extension_prefs_->GetDisableReasons(extension->id()) & ~disable_mask;
+    if (!other_disable_reasons) {
+      if (extension_prefs_->DidExtensionEscalatePermissions(extension->id()))
+        GrantPermissionsAndEnableExtension(extension);
+      else
+        EnableExtension(extension->id());
+    }
   }
+
+  registry_->TriggerOnInstalled(extension, true);
+
+  if (!is_from_sync && extension_sync_service_)
+    extension_sync_service_->SyncExtensionChangeIfNeeded(*extension);
 }
 
 const Extension* ExtensionService::GetPendingExtensionUpdate(
@@ -1959,6 +1900,22 @@ const Extension* ExtensionService::GetPendingExtensionUpdate(
   return delayed_installs_.GetByID(id);
 }
 
+void ExtensionService::RegisterContentSettings(
+    HostContentSettingsMap* host_content_settings_map) {
+  host_content_settings_map->RegisterProvider(
+      HostContentSettingsMap::INTERNAL_EXTENSION_PROVIDER,
+      scoped_ptr<content_settings::ObservableProvider>(
+          new content_settings::InternalExtensionProvider(this)));
+
+  host_content_settings_map->RegisterProvider(
+      HostContentSettingsMap::CUSTOM_EXTENSION_PROVIDER,
+      scoped_ptr<content_settings::ObservableProvider>(
+          new content_settings::CustomExtensionProvider(
+              extensions::ContentSettingsService::Get(
+                  profile_)->content_settings_store(),
+              profile_->GetOriginalProfile() != profile_)));
+}
+
 void ExtensionService::TrackTerminatedExtension(const Extension* extension) {
   // No need to check for duplicates; inserting a duplicate is a no-op.
   registry_->AddTerminated(make_scoped_refptr(extension));
@@ -1972,13 +1929,13 @@ void ExtensionService::TerminateExtension(const std::string& extension_id) {
 }
 
 void ExtensionService::UntrackTerminatedExtension(const std::string& id) {
-  std::string lowercase_id = StringToLowerASCII(id);
+  std::string lowercase_id = base::StringToLowerASCII(id);
   const Extension* extension =
       registry_->terminated_extensions().GetByID(lowercase_id);
   registry_->RemoveTerminated(lowercase_id);
   if (extension) {
     content::NotificationService::current()->Notify(
-        chrome::NOTIFICATION_EXTENSION_REMOVED,
+        extensions::NOTIFICATION_EXTENSION_REMOVED,
         content::Source<Profile>(profile_),
         content::Details<const Extension>(extension));
   }
@@ -1997,7 +1954,7 @@ bool ExtensionService::OnExternalExtensionFileFound(
          int creation_flags,
          bool mark_acknowledged) {
   CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-  CHECK(Extension::IdIsValid(id));
+  CHECK(crx_file::id_util::IdIsValid(id));
   if (extension_prefs_->IsExternalExtensionUninstalled(id))
     return false;
 
@@ -2057,7 +2014,7 @@ bool ExtensionService::OnExternalExtensionFileFound(
   // notification on installation. For such extensions, mark them acknowledged
   // now to suppress the notification.
   if (mark_acknowledged)
-    AcknowledgeExternalExtension(id);
+    external_install_manager_->AcknowledgeExternalExtension(id);
 
   return true;
 }
@@ -2069,7 +2026,7 @@ void ExtensionService::DidCreateRenderViewForBackgroundPage(
   if (iter == orphaned_dev_tools_.end())
     return;
 
-  iter->second->ConnectRenderViewHost(host->render_view_host());
+  iter->second->ConnectWebContents(host->host_contents());
   orphaned_dev_tools_.erase(iter);
 }
 
@@ -2083,7 +2040,7 @@ void ExtensionService::Observe(int type,
       // happens too late in browser teardown.)
       browser_terminating_ = true;
       break;
-    case chrome::NOTIFICATION_EXTENSION_PROCESS_TERMINATED: {
+    case extensions::NOTIFICATION_EXTENSION_PROCESS_TERMINATED: {
       if (profile_ !=
           content::Source<Profile>(source).ptr()->GetOriginalProfile()) {
         break;
@@ -2152,40 +2109,21 @@ void ExtensionService::Observe(int type,
                         OnChromeUpdateAvailable());
       break;
     }
+    case chrome::NOTIFICATION_PROFILE_DESTRUCTION_STARTED: {
+      OnProfileDestructionStarted();
+      break;
+    }
 
     default:
       NOTREACHED() << "Unexpected notification type.";
   }
 }
 
-void ExtensionService::OnExtensionInstallPrefChanged() {
-  error_controller_->ShowErrorIfNeeded();
-  CheckManagementPolicy();
-}
-
-bool ExtensionService::IsBeingReloaded(
-    const std::string& extension_id) const {
-  return ContainsKey(extensions_being_reloaded_, extension_id);
-}
-
-void ExtensionService::SetBeingReloaded(const std::string& extension_id,
-                                        bool isBeingReloaded) {
-  if (isBeingReloaded)
-    extensions_being_reloaded_.insert(extension_id);
-  else
-    extensions_being_reloaded_.erase(extension_id);
-}
-
 bool ExtensionService::ShouldEnableOnInstall(const Extension* extension) {
   // Extensions installed by policy can't be disabled. So even if a previous
   // installation disabled the extension, make sure it is now enabled.
-  // TODO(rlp): Clean up the special case for external components as noted
-  // in crbug.com/353266. For now, EXTERNAL_COMPONENT apps should be
-  // default enabled on install as before.
-  if (system_->management_policy()->MustRemainEnabled(extension, NULL) ||
-      extension->location() == Manifest::EXTERNAL_COMPONENT) {
+  if (system_->management_policy()->MustRemainEnabled(extension, NULL))
     return true;
-  }
 
   if (extension_prefs_->IsExtensionDisabled(extension->id()))
     return false;
@@ -2206,12 +2144,12 @@ bool ExtensionService::ShouldEnableOnInstall(const Extension* extension) {
 
 bool ExtensionService::ShouldDelayExtensionUpdate(
     const std::string& extension_id,
-    bool wait_for_idle) const {
+    bool install_immediately) const {
   const char kOnUpdateAvailableEvent[] = "runtime.onUpdateAvailable";
 
   // If delayed updates are globally disabled, or just for this extension,
   // don't delay.
-  if (!install_updates_when_idle_ || !wait_for_idle)
+  if (!install_updates_when_idle_ || install_immediately)
     return false;
 
   const Extension* old = GetInstalledExtension(extension_id);
@@ -2415,3 +2353,12 @@ void ExtensionService::UnloadAllExtensionsInternal() {
   // EXTENSION_UNLOADED since that implies that the extension has been disabled
   // or uninstalled.
 }
+
+void ExtensionService::OnProfileDestructionStarted() {
+  ExtensionIdSet ids_to_unload = registry_->enabled_extensions().GetIDs();
+  for (ExtensionIdSet::iterator it = ids_to_unload.begin();
+       it != ids_to_unload.end();
+       ++it) {
+    UnloadExtension(*it, UnloadedExtensionInfo::REASON_PROFILE_SHUTDOWN);
+  }
+}