src/chrome/browser/browser_process_impl.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/browser_process_impl.h"
   6
   7 #include <algorithm>
   8 #include <map>
   9 #include <vector>
  10
  11 #include "base/atomic_ref_count.h"
  12 #include "base/bind.h"
  13 #include "base/bind_helpers.h"
  14 #include "base/command_line.h"
  15 #include "base/debug/alias.h"
  16 #include "base/debug/leak_annotations.h"
  17 #include "base/files/file_path.h"
  18 #include "base/metrics/field_trial.h"
  19 #include "base/path_service.h"
  20 #include "base/prefs/json_pref_store.h"
  21 #include "base/prefs/pref_registry_simple.h"
  22 #include "base/prefs/pref_service.h"
  23 #include "base/synchronization/waitable_event.h"
  24 #include "base/threading/thread.h"
  25 #include "base/threading/thread_restrictions.h"
  26 #include "base/time/default_tick_clock.h"
  27 #include "chrome/browser/chrome_browser_main.h"
  28 #include "chrome/browser/chrome_content_browser_client.h"
  29 #include "chrome/browser/chrome_notification_types.h"
  30 #include "chrome/browser/component_updater/chrome_component_updater_configurator.h"
  31 #include "chrome/browser/defaults.h"
  32 #include "chrome/browser/devtools/remote_debugging_server.h"
  33 #include "chrome/browser/download/download_request_limiter.h"
  34 #include "chrome/browser/download/download_status_updater.h"
  35 #include "chrome/browser/first_run/upgrade_util.h"
  36 #include "chrome/browser/gpu/gl_string_manager.h"
  37 #include "chrome/browser/gpu/gpu_mode_manager.h"
  38 #include "chrome/browser/icon_manager.h"
  39 #include "chrome/browser/idle.h"
  40 #include "chrome/browser/intranet_redirect_detector.h"
  41 #include "chrome/browser/io_thread.h"
  42 #include "chrome/browser/lifetime/application_lifetime.h"
  43 #include "chrome/browser/metrics/metrics_services_manager.h"
  44 #include "chrome/browser/metrics/thread_watcher.h"
  45 #include "chrome/browser/net/chrome_net_log.h"
  46 #include "chrome/browser/net/crl_set_fetcher.h"
  47 #include "chrome/browser/notifications/notification_ui_manager.h"
  48 #include "chrome/browser/omaha_query_params/chrome_omaha_query_params_delegate.h"
  49 #include "chrome/browser/plugins/chrome_plugin_service_filter.h"
  50 #include "chrome/browser/plugins/plugin_finder.h"
  51 #include "chrome/browser/prefs/browser_prefs.h"
  52 #include "chrome/browser/prefs/chrome_pref_service_factory.h"
  53 #include "chrome/browser/prerender/prerender_tracker.h"
  54 #include "chrome/browser/printing/background_printing_manager.h"
  55 #include "chrome/browser/printing/print_job_manager.h"
  56 #include "chrome/browser/printing/print_preview_dialog_controller.h"
  57 #include "chrome/browser/profiles/profile_manager.h"
  58 #include "chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.h"
  59 #include "chrome/browser/safe_browsing/safe_browsing_service.h"
  60 #include "chrome/browser/shell_integration.h"
  61 #include "chrome/browser/status_icons/status_tray.h"
  62 #include "chrome/browser/ui/browser_dialogs.h"
  63 #include "chrome/browser/ui/browser_finder.h"
  64 #include "chrome/browser/ui/user_manager.h"
  65 #include "chrome/browser/web_resource/promo_resource_service.h"
  66 #include "chrome/common/chrome_constants.h"
  67 #include "chrome/common/chrome_paths.h"
  68 #include "chrome/common/chrome_switches.h"
  69 #include "chrome/common/extensions/chrome_extensions_client.h"
  70 #include "chrome/common/pref_names.h"
  71 #include "chrome/common/switch_utils.h"
  72 #include "chrome/common/url_constants.h"
  73 #include "chrome/installer/util/google_update_constants.h"
  74 #include "chrome/installer/util/google_update_settings.h"
  75 #include "components/component_updater/component_updater_service.h"
  76 #include "components/gcm_driver/gcm_driver.h"
  77 #include "components/metrics/metrics_service.h"
  78 #include "components/network_time/network_time_tracker.h"
  79 #include "components/omaha_query_params/omaha_query_params.h"
  80 #include "components/policy/core/common/policy_service.h"
  81 #include "components/signin/core/common/profile_management_switches.h"
  82 #include "components/translate/core/browser/translate_download_manager.h"
  83 #include "content/public/browser/browser_thread.h"
  84 #include "content/public/browser/child_process_security_policy.h"
  85 #include "content/public/browser/notification_details.h"
  86 #include "content/public/browser/plugin_service.h"
  87 #include "content/public/browser/render_process_host.h"
  88 #include "content/public/browser/resource_dispatcher_host.h"
  89 #include "content/public/browser/service_worker_context.h"
  90 #include "content/public/browser/storage_partition.h"
  91 #include "extensions/common/constants.h"
  92 #include "net/socket/client_socket_pool_manager.h"
  93 #include "net/url_request/url_request_context_getter.h"
  94 #include "ui/base/l10n/l10n_util.h"
  95 #include "ui/message_center/message_center.h"
  96
  97 #if defined(OS_WIN)
  98 #include "base/win/windows_version.h"
  99 #include "ui/views/focus/view_storage.h"
 100 #elif defined(OS_MACOSX)
 101 #include "chrome/browser/chrome_browser_main_mac.h"
 102 #endif
 103
 104 #if defined(OS_ANDROID)
 105 #include "components/gcm_driver/gcm_driver_android.h"
 106 #else
 107 #include "chrome/browser/chrome_device_client.h"
 108 #include "chrome/browser/services/gcm/gcm_desktop_utils.h"
 109 #include "components/gcm_driver/gcm_client_factory.h"
 110 #endif
 111
 112 #if defined(USE_AURA)
 113 #include "ui/aura/env.h"
 114 #endif
 115
 116 #if defined(ENABLE_BACKGROUND)
 117 #include "chrome/browser/background/background_mode_manager.h"
 118 #endif
 119
 120 #if defined(ENABLE_CONFIGURATION_POLICY)
 121 #include "components/policy/core/browser/browser_policy_connector.h"
 122 #else
 123 #include "components/policy/core/common/policy_service_stub.h"
 124 #endif  // defined(ENABLE_CONFIGURATION_POLICY)
 125
 126 #if defined(ENABLE_EXTENSIONS)
 127 #include "chrome/browser/extensions/chrome_extensions_browser_client.h"
 128 #include "chrome/browser/extensions/event_router_forwarder.h"
 129 #include "chrome/browser/extensions/extension_renderer_state.h"
 130 #include "chrome/browser/media_galleries/media_file_system_registry.h"
 131 #include "chrome/browser/ui/apps/chrome_app_window_client.h"
 132 #include "components/storage_monitor/storage_monitor.h"
 133 #include "extensions/common/extension_l10n_util.h"
 134 #endif
 135
 136 #if !defined(DISABLE_NACL)
 137 #include "chrome/browser/component_updater/pnacl/pnacl_component_installer.h"
 138 #endif
 139
 140 #if defined(ENABLE_PLUGIN_INSTALLATION)
 141 #include "chrome/browser/plugins/plugins_resource_service.h"
 142 #endif
 143
 144 #if defined(ENABLE_WEBRTC)
 145 #include "chrome/browser/media/webrtc_log_uploader.h"
 146 #endif
 147
 148 #if (defined(OS_WIN) || defined(OS_LINUX)) && !defined(OS_CHROMEOS)
 149 // How often to check if the persistent instance of Chrome needs to restart
 150 // to install an update.
 151 static const int kUpdateCheckIntervalHours = 6;
 152 #endif
 153
 154 #if defined(USE_X11) || defined(OS_WIN)
 155 // How long to wait for the File thread to complete during EndSession, on Linux
 156 // and Windows. We have a timeout here because we're unable to run the UI
 157 // messageloop and there's some deadlock risk. Our only option is to exit
 158 // anyway.
 159 static const int kEndSessionTimeoutSeconds = 10;
 160 #endif
 161
 162 using content::BrowserThread;
 163 using content::ChildProcessSecurityPolicy;
 164 using content::PluginService;
 165 using content::ResourceDispatcherHost;
 166
 167 BrowserProcessImpl::BrowserProcessImpl(
 168     base::SequencedTaskRunner* local_state_task_runner,
 169     const CommandLine& command_line)
 170     : created_watchdog_thread_(false),
 171       created_browser_policy_connector_(false),
 172       created_profile_manager_(false),
 173       created_local_state_(false),
 174       created_icon_manager_(false),
 175       created_notification_ui_manager_(false),
 176       created_safe_browsing_service_(false),
 177       module_ref_count_(0),
 178       did_start_(false),
 179       download_status_updater_(new DownloadStatusUpdater),
 180       local_state_task_runner_(local_state_task_runner) {
 181   g_browser_process = this;
 182   platform_part_.reset(new BrowserProcessPlatformPart());
 183
 184 #if defined(ENABLE_PRINTING)
 185   // Must be created after the NotificationService.
 186   print_job_manager_.reset(new printing::PrintJobManager);
 187 #endif
 188
 189   net_log_.reset(new ChromeNetLog);
 190
 191   ChildProcessSecurityPolicy::GetInstance()->RegisterWebSafeScheme(
 192       extensions::kExtensionScheme);
 193   ChildProcessSecurityPolicy::GetInstance()->RegisterWebSafeScheme(
 194       extensions::kExtensionResourceScheme);
 195   ChildProcessSecurityPolicy::GetInstance()->RegisterWebSafeScheme(
 196       chrome::kChromeSearchScheme);
 197
 198 #if defined(OS_MACOSX)
 199   InitIdleMonitor();
 200 #endif
 201
 202 #if !defined(OS_ANDROID)
 203   device_client_.reset(new ChromeDeviceClient);
 204 #endif
 205
 206 #if defined(ENABLE_EXTENSIONS)
 207 #if !defined(USE_ATHENA)
 208   // Athena sets its own instance during Athena's init process.
 209   extensions::AppWindowClient::Set(ChromeAppWindowClient::GetInstance());
 210 #endif
 211
 212   extension_event_router_forwarder_ = new extensions::EventRouterForwarder;
 213   ExtensionRendererState::GetInstance()->Init();
 214
 215   extensions::ExtensionsClient::Set(
 216       extensions::ChromeExtensionsClient::GetInstance());
 217
 218   extensions_browser_client_.reset(
 219       new extensions::ChromeExtensionsBrowserClient);
 220   extensions::ExtensionsBrowserClient::Set(extensions_browser_client_.get());
 221 #endif
 222
 223   message_center::MessageCenter::Initialize();
 224
 225   omaha_query_params::OmahaQueryParams::SetDelegate(
 226       ChromeOmahaQueryParamsDelegate::GetInstance());
 227 }
 228
 229 BrowserProcessImpl::~BrowserProcessImpl() {
 230   tracked_objects::ThreadData::EnsureCleanupWasCalled(4);
 231
 232   g_browser_process = NULL;
 233 }
 234
 235 void BrowserProcessImpl::StartTearDown() {
 236     TRACE_EVENT0("shutdown", "BrowserProcessImpl::StartTearDown");
 237   // We need to destroy the MetricsServicesManager, IntranetRedirectDetector,
 238   // PromoResourceService, and SafeBrowsing ClientSideDetectionService (owned by
 239   // the SafeBrowsingService) before the io_thread_ gets destroyed, since their
 240   // destructors can call the URLFetcher destructor, which does a
 241   // PostDelayedTask operation on the IO thread. (The IO thread will handle that
 242   // URLFetcher operation before going away.)
 243   metrics_services_manager_.reset();
 244   intranet_redirect_detector_.reset();
 245 #if defined(FULL_SAFE_BROWSING) || defined(MOBILE_SAFE_BROWSING)
 246   if (safe_browsing_service_.get())
 247     safe_browsing_service()->ShutDown();
 248 #endif
 249
 250   // Need to clear the desktop notification balloons before the io_thread_ and
 251   // before the profiles, since if there are any still showing we will access
 252   // those things during teardown.
 253   notification_ui_manager_.reset();
 254
 255   // Need to clear profiles (download managers) before the io_thread_.
 256   {
 257     TRACE_EVENT0("shutdown",
 258                  "BrowserProcessImpl::StartTearDown:ProfileManager");
 259     // The desktop User Manager needs to be closed before the guest profile
 260     // can be destroyed.
 261     if (switches::IsNewAvatarMenu())
 262       UserManager::Hide();
 263     profile_manager_.reset();
 264   }
 265
 266 #if !defined(OS_ANDROID)
 267   // Debugger must be cleaned up before IO thread and NotificationService.
 268   remote_debugging_server_.reset();
 269 #endif
 270
 271 #if defined(ENABLE_EXTENSIONS)
 272   ExtensionRendererState::GetInstance()->Shutdown();
 273
 274   media_file_system_registry_.reset();
 275   // Remove the global instance of the Storage Monitor now. Otherwise the
 276   // FILE thread would be gone when we try to release it in the dtor and
 277   // Valgrind would report a leak on almost every single browser_test.
 278   // TODO(gbillock): Make this unnecessary.
 279   storage_monitor::StorageMonitor::Destroy();
 280 #endif
 281
 282   message_center::MessageCenter::Shutdown();
 283
 284 #if defined(ENABLE_CONFIGURATION_POLICY)
 285   // The policy providers managed by |browser_policy_connector_| need to shut
 286   // down while the IO and FILE threads are still alive.
 287   if (browser_policy_connector_)
 288     browser_policy_connector_->Shutdown();
 289 #endif
 290
 291   // The |gcm_driver_| must shut down while the IO thread is still alive.
 292   if (gcm_driver_)
 293     gcm_driver_->Shutdown();
 294
 295   // Stop the watchdog thread before stopping other threads.
 296   watchdog_thread_.reset();
 297
 298 #if defined(USE_AURA)
 299   // Delete aura after the metrics service has been deleted as it accesses
 300   // monitor information.
 301   aura::Env::DeleteInstance();
 302 #endif
 303
 304   platform_part()->StartTearDown();
 305
 306 #if defined(ENABLE_WEBRTC)
 307   // Cancel any uploads to release the system url request context references.
 308   if (webrtc_log_uploader_)
 309     webrtc_log_uploader_->StartShutdown();
 310 #endif
 311
 312   if (local_state())
 313     local_state()->CommitPendingWrite();
 314 }
 315
 316 void BrowserProcessImpl::PostDestroyThreads() {
 317   // With the file_thread_ flushed, we can release any icon resources.
 318   icon_manager_.reset();
 319
 320 #if defined(ENABLE_WEBRTC)
 321   // Must outlive the file thread.
 322   webrtc_log_uploader_.reset();
 323 #endif
 324
 325   // Reset associated state right after actual thread is stopped,
 326   // as io_thread_.global_ cleanup happens in CleanUp on the IO
 327   // thread, i.e. as the thread exits its message loop.
 328   //
 329   // This is important also because in various places, the
 330   // IOThread object being NULL is considered synonymous with the
 331   // IO thread having stopped.
 332   io_thread_.reset();
 333 }
 334
 335 unsigned int BrowserProcessImpl::AddRefModule() {
 336   DCHECK(CalledOnValidThread());
 337
 338   // CHECK(!IsShuttingDown());
 339   if (IsShuttingDown()) {
 340     // Copy the stacktrace which released the final reference onto our stack so
 341     // it will be available in the crash report for inspection.
 342     base::debug::StackTrace callstack = release_last_reference_callstack_;
 343     base::debug::Alias(&callstack);
 344     CHECK(false);
 345   }
 346
 347   did_start_ = true;
 348   module_ref_count_++;
 349   return module_ref_count_;
 350 }
 351
 352 unsigned int BrowserProcessImpl::ReleaseModule() {
 353   DCHECK(CalledOnValidThread());
 354   DCHECK_NE(0u, module_ref_count_);
 355   module_ref_count_--;
 356   if (0 == module_ref_count_) {
 357     release_last_reference_callstack_ = base::debug::StackTrace();
 358
 359 #if defined(ENABLE_PRINTING)
 360     // Wait for the pending print jobs to finish. Don't do this later, since
 361     // this might cause a nested message loop to run, and we don't want pending
 362     // tasks to run once teardown has started.
 363     print_job_manager_->Shutdown();
 364 #endif
 365
 366 #if defined(LEAK_SANITIZER)
 367     // Check for memory leaks now, before we start shutting down threads. Doing
 368     // this early means we won't report any shutdown-only leaks (as they have
 369     // not yet happened at this point).
 370     // If leaks are found, this will make the process exit immediately.
 371     __lsan_do_leak_check();
 372 #endif
 373
 374     CHECK(base::MessageLoop::current()->is_running());
 375
 376 #if defined(OS_MACOSX)
 377     base::MessageLoop::current()->PostTask(
 378         FROM_HERE,
 379         base::Bind(ChromeBrowserMainPartsMac::DidEndMainMessageLoop));
 380 #endif
 381     base::MessageLoop::current()->Quit();
 382   }
 383   return module_ref_count_;
 384 }
 385
 386 namespace {
 387
 388 // Used at the end of session to block the UI thread for completion of sentinel
 389 // tasks on the set of threads used to persist profile data and local state.
 390 // This is done to ensure that the data has been persisted to disk before
 391 // continuing.
 392 class RundownTaskCounter :
 393     public base::RefCountedThreadSafe<RundownTaskCounter> {
 394  public:
 395   RundownTaskCounter();
 396
 397   // Posts a rundown task to |task_runner|, can be invoked an arbitrary number
 398   // of times before calling TimedWait.
 399   void Post(base::SequencedTaskRunner* task_runner);
 400
 401   // Waits until the count is zero or |max_time| has passed.
 402   // This can only be called once per instance.
 403   bool TimedWait(const base::TimeDelta& max_time);
 404
 405  private:
 406   friend class base::RefCountedThreadSafe<RundownTaskCounter>;
 407   ~RundownTaskCounter() {}
 408
 409   // Decrements the counter and releases the waitable event on transition to
 410   // zero.
 411   void Decrement();
 412
 413   // The count starts at one to defer the possibility of one->zero transitions
 414   // until TimedWait is called.
 415   base::AtomicRefCount count_;
 416   base::WaitableEvent waitable_event_;
 417
 418   DISALLOW_COPY_AND_ASSIGN(RundownTaskCounter);
 419 };
 420
 421 RundownTaskCounter::RundownTaskCounter()
 422     : count_(1), waitable_event_(true, false) {
 423 }
 424
 425 void RundownTaskCounter::Post(base::SequencedTaskRunner* task_runner) {
 426   // As the count starts off at one, it should never get to zero unless
 427   // TimedWait has been called.
 428   DCHECK(!base::AtomicRefCountIsZero(&count_));
 429
 430   base::AtomicRefCountInc(&count_);
 431
 432   // The task must be non-nestable to guarantee that it runs after all tasks
 433   // currently scheduled on |task_runner| have completed.
 434   task_runner->PostNonNestableTask(FROM_HERE,
 435       base::Bind(&RundownTaskCounter::Decrement, this));
 436 }
 437
 438 void RundownTaskCounter::Decrement() {
 439   if (!base::AtomicRefCountDec(&count_))
 440     waitable_event_.Signal();
 441 }
 442
 443 bool RundownTaskCounter::TimedWait(const base::TimeDelta& max_time) {
 444   // Decrement the excess count from the constructor.
 445   Decrement();
 446
 447   return waitable_event_.TimedWait(max_time);
 448 }
 449
 450 bool ExperimentUseBrokenSynchronization() {
 451   // The logoff behavior used to have a race, whereby it would perform profile
 452   // IO writes on the blocking thread pool, but would sycnhronize to the FILE
 453   // thread. Windows feels free to terminate any process that's hidden or
 454   // destroyed all it's windows, and sometimes Chrome would be terminated
 455   // with pending profile IO due to this mis-synchronization.
 456   // Under the "WindowsLogoffRace" experiment group, the broken behavior is
 457   // emulated, in order to allow measuring what fraction of unclean shutdowns
 458   // are due to this bug.
 459   const std::string group_name =
 460       base::FieldTrialList::FindFullName("WindowsLogoffRace");
 461   return group_name == "BrokenSynchronization";
 462 }
 463
 464 }  // namespace
 465
 466 void BrowserProcessImpl::EndSession() {
 467   bool use_broken_synchronization = ExperimentUseBrokenSynchronization();
 468
 469   // Mark all the profiles as clean.
 470   ProfileManager* pm = profile_manager();
 471   std::vector<Profile*> profiles(pm->GetLoadedProfiles());
 472   scoped_refptr<RundownTaskCounter> rundown_counter(new RundownTaskCounter());
 473   for (size_t i = 0; i < profiles.size(); ++i) {
 474     Profile* profile = profiles[i];
 475     profile->SetExitType(Profile::EXIT_SESSION_ENDED);
 476
 477     if (!use_broken_synchronization)
 478       rundown_counter->Post(profile->GetIOTaskRunner().get());
 479   }
 480
 481   // Tell the metrics service it was cleanly shutdown.
 482   metrics::MetricsService* metrics = g_browser_process->metrics_service();
 483   if (metrics && local_state()) {
 484     metrics->RecordStartOfSessionEnd();
 485 #if !defined(OS_CHROMEOS)
 486     // MetricsService lazily writes to prefs, force it to write now.
 487     // On ChromeOS, chrome gets killed when hangs, so no need to
 488     // commit metrics::prefs::kStabilitySessionEndCompleted change immediately.
 489     local_state()->CommitPendingWrite();
 490
 491     if (!use_broken_synchronization)
 492       rundown_counter->Post(local_state_task_runner_.get());
 493 #endif
 494   }
 495
 496   // http://crbug.com/125207
 497   base::ThreadRestrictions::ScopedAllowWait allow_wait;
 498
 499   // We must write that the profile and metrics service shutdown cleanly,
 500   // otherwise on startup we'll think we crashed. So we block until done and
 501   // then proceed with normal shutdown.
 502   //
 503   // If you change the condition here, be sure to also change
 504   // ProfileBrowserTests to match.
 505 #if defined(USE_X11) || defined(OS_WIN)
 506   if (use_broken_synchronization) {
 507     rundown_counter->Post(
 508         BrowserThread::GetMessageLoopProxyForThread(BrowserThread::FILE).get());
 509   }
 510
 511   // Do a best-effort wait on the successful countdown of rundown tasks. Note
 512   // that if we don't complete "quickly enough", Windows will terminate our
 513   // process.
 514   //
 515   // On Windows, we previously posted a message to FILE and then ran a nested
 516   // message loop, waiting for that message to be processed until quitting.
 517   // However, doing so means that other messages will also be processed. In
 518   // particular, if the GPU process host notices that the GPU has been killed
 519   // during shutdown, it races exiting the nested loop with the process host
 520   // blocking the message loop attempting to re-establish a connection to the
 521   // GPU process synchronously. Because the system may not be allowing
 522   // processes to launch, this can result in a hang. See
 523   // http://crbug.com/318527.
 524   rundown_counter->TimedWait(
 525       base::TimeDelta::FromSeconds(kEndSessionTimeoutSeconds));
 526 #else
 527   NOTIMPLEMENTED();
 528 #endif
 529 }
 530
 531 MetricsServicesManager* BrowserProcessImpl::GetMetricsServicesManager() {
 532   DCHECK(CalledOnValidThread());
 533   if (!metrics_services_manager_)
 534     metrics_services_manager_.reset(new MetricsServicesManager(local_state()));
 535   return metrics_services_manager_.get();
 536 }
 537
 538 metrics::MetricsService* BrowserProcessImpl::metrics_service() {
 539   DCHECK(CalledOnValidThread());
 540   return GetMetricsServicesManager()->GetMetricsService();
 541 }
 542
 543 rappor::RapporService* BrowserProcessImpl::rappor_service() {
 544   DCHECK(CalledOnValidThread());
 545   return GetMetricsServicesManager()->GetRapporService();
 546 }
 547
 548 IOThread* BrowserProcessImpl::io_thread() {
 549   DCHECK(CalledOnValidThread());
 550   DCHECK(io_thread_.get());
 551   return io_thread_.get();
 552 }
 553
 554 WatchDogThread* BrowserProcessImpl::watchdog_thread() {
 555   DCHECK(CalledOnValidThread());
 556   if (!created_watchdog_thread_)
 557     CreateWatchdogThread();
 558   DCHECK(watchdog_thread_.get() != NULL);
 559   return watchdog_thread_.get();
 560 }
 561
 562 ProfileManager* BrowserProcessImpl::profile_manager() {
 563   DCHECK(CalledOnValidThread());
 564   if (!created_profile_manager_)
 565     CreateProfileManager();
 566   return profile_manager_.get();
 567 }
 568
 569 PrefService* BrowserProcessImpl::local_state() {
 570   DCHECK(CalledOnValidThread());
 571   if (!created_local_state_)
 572     CreateLocalState();
 573   return local_state_.get();
 574 }
 575
 576 net::URLRequestContextGetter* BrowserProcessImpl::system_request_context() {
 577   DCHECK(CalledOnValidThread());
 578   return io_thread()->system_url_request_context_getter();
 579 }
 580
 581 chrome_variations::VariationsService* BrowserProcessImpl::variations_service() {
 582   DCHECK(CalledOnValidThread());
 583   return GetMetricsServicesManager()->GetVariationsService();
 584 }
 585
 586 BrowserProcessPlatformPart* BrowserProcessImpl::platform_part() {
 587   return platform_part_.get();
 588 }
 589
 590 extensions::EventRouterForwarder*
 591 BrowserProcessImpl::extension_event_router_forwarder() {
 592 #if defined(ENABLE_EXTENSIONS)
 593   return extension_event_router_forwarder_.get();
 594 #else
 595   return NULL;
 596 #endif
 597 }
 598
 599 NotificationUIManager* BrowserProcessImpl::notification_ui_manager() {
 600   DCHECK(CalledOnValidThread());
 601   if (!created_notification_ui_manager_)
 602     CreateNotificationUIManager();
 603   return notification_ui_manager_.get();
 604 }
 605
 606 message_center::MessageCenter* BrowserProcessImpl::message_center() {
 607   DCHECK(CalledOnValidThread());
 608   return message_center::MessageCenter::Get();
 609 }
 610
 611 policy::BrowserPolicyConnector* BrowserProcessImpl::browser_policy_connector() {
 612   DCHECK(CalledOnValidThread());
 613 #if defined(ENABLE_CONFIGURATION_POLICY)
 614   if (!created_browser_policy_connector_) {
 615     DCHECK(!browser_policy_connector_);
 616     browser_policy_connector_ = platform_part_->CreateBrowserPolicyConnector();
 617     created_browser_policy_connector_ = true;
 618   }
 619   return browser_policy_connector_.get();
 620 #else
 621   return NULL;
 622 #endif
 623 }
 624
 625 policy::PolicyService* BrowserProcessImpl::policy_service() {
 626 #if defined(ENABLE_CONFIGURATION_POLICY)
 627   return browser_policy_connector()->GetPolicyService();
 628 #else
 629   if (!policy_service_.get())
 630     policy_service_.reset(new policy::PolicyServiceStub());
 631   return policy_service_.get();
 632 #endif
 633 }
 634
 635 IconManager* BrowserProcessImpl::icon_manager() {
 636   DCHECK(CalledOnValidThread());
 637   if (!created_icon_manager_)
 638     CreateIconManager();
 639   return icon_manager_.get();
 640 }
 641
 642 GLStringManager* BrowserProcessImpl::gl_string_manager() {
 643   DCHECK(CalledOnValidThread());
 644   if (!gl_string_manager_.get())
 645     gl_string_manager_.reset(new GLStringManager());
 646   return gl_string_manager_.get();
 647 }
 648
 649 GpuModeManager* BrowserProcessImpl::gpu_mode_manager() {
 650   DCHECK(CalledOnValidThread());
 651   if (!gpu_mode_manager_.get())
 652     gpu_mode_manager_.reset(new GpuModeManager());
 653   return gpu_mode_manager_.get();
 654 }
 655
 656 void BrowserProcessImpl::CreateDevToolsHttpProtocolHandler(
 657     chrome::HostDesktopType host_desktop_type,
 658     const std::string& ip,
 659     int port) {
 660   DCHECK(CalledOnValidThread());
 661 #if !defined(OS_ANDROID)
 662   // StartupBrowserCreator::LaunchBrowser can be run multiple times when browser
 663   // is started with several profiles or existing browser process is reused.
 664   if (!remote_debugging_server_.get()) {
 665     remote_debugging_server_.reset(
 666         new RemoteDebuggingServer(host_desktop_type, ip, port));
 667   }
 668 #endif
 669 }
 670
 671 bool BrowserProcessImpl::IsShuttingDown() {
 672   DCHECK(CalledOnValidThread());
 673   return did_start_ && 0 == module_ref_count_;
 674 }
 675
 676 printing::PrintJobManager* BrowserProcessImpl::print_job_manager() {
 677   DCHECK(CalledOnValidThread());
 678   return print_job_manager_.get();
 679 }
 680
 681 printing::PrintPreviewDialogController*
 682     BrowserProcessImpl::print_preview_dialog_controller() {
 683 #if defined(ENABLE_PRINT_PREVIEW)
 684   DCHECK(CalledOnValidThread());
 685   if (!print_preview_dialog_controller_.get())
 686     CreatePrintPreviewDialogController();
 687   return print_preview_dialog_controller_.get();
 688 #else
 689   NOTIMPLEMENTED();
 690   return NULL;
 691 #endif
 692 }
 693
 694 printing::BackgroundPrintingManager*
 695     BrowserProcessImpl::background_printing_manager() {
 696 #if defined(ENABLE_PRINT_PREVIEW)
 697   DCHECK(CalledOnValidThread());
 698   if (!background_printing_manager_.get())
 699     CreateBackgroundPrintingManager();
 700   return background_printing_manager_.get();
 701 #else
 702   NOTIMPLEMENTED();
 703   return NULL;
 704 #endif
 705 }
 706
 707 IntranetRedirectDetector* BrowserProcessImpl::intranet_redirect_detector() {
 708   DCHECK(CalledOnValidThread());
 709   if (!intranet_redirect_detector_.get())
 710     CreateIntranetRedirectDetector();
 711   return intranet_redirect_detector_.get();
 712 }
 713
 714 const std::string& BrowserProcessImpl::GetApplicationLocale() {
 715   DCHECK(!locale_.empty());
 716   return locale_;
 717 }
 718
 719 void BrowserProcessImpl::SetApplicationLocale(const std::string& locale) {
 720   locale_ = locale;
 721 #if defined(ENABLE_EXTENSIONS)
 722   extension_l10n_util::SetProcessLocale(locale);
 723 #endif
 724   chrome::ChromeContentBrowserClient::SetApplicationLocale(locale);
 725   translate::TranslateDownloadManager::GetInstance()->set_application_locale(
 726       locale);
 727 }
 728
 729 DownloadStatusUpdater* BrowserProcessImpl::download_status_updater() {
 730   return download_status_updater_.get();
 731 }
 732
 733 MediaFileSystemRegistry* BrowserProcessImpl::media_file_system_registry() {
 734 #if defined(ENABLE_EXTENSIONS)
 735   if (!media_file_system_registry_)
 736     media_file_system_registry_.reset(new MediaFileSystemRegistry());
 737   return media_file_system_registry_.get();
 738 #else
 739   return NULL;
 740 #endif
 741 }
 742
 743 bool BrowserProcessImpl::created_local_state() const {
 744   return created_local_state_;
 745 }
 746
 747 #if defined(ENABLE_WEBRTC)
 748 WebRtcLogUploader* BrowserProcessImpl::webrtc_log_uploader() {
 749   if (!webrtc_log_uploader_.get())
 750     webrtc_log_uploader_.reset(new WebRtcLogUploader());
 751   return webrtc_log_uploader_.get();
 752 }
 753 #endif
 754
 755 network_time::NetworkTimeTracker* BrowserProcessImpl::network_time_tracker() {
 756   if (!network_time_tracker_) {
 757     network_time_tracker_.reset(new network_time::NetworkTimeTracker(
 758         scoped_ptr<base::TickClock>(new base::DefaultTickClock()),
 759         local_state()));
 760   }
 761   return network_time_tracker_.get();
 762 }
 763
 764 gcm::GCMDriver* BrowserProcessImpl::gcm_driver() {
 765   DCHECK(CalledOnValidThread());
 766   if (!gcm_driver_)
 767     CreateGCMDriver();
 768   return gcm_driver_.get();
 769 }
 770
 771 // static
 772 void BrowserProcessImpl::RegisterPrefs(PrefRegistrySimple* registry) {
 773   registry->RegisterBooleanPref(prefs::kDefaultBrowserSettingEnabled,
 774                                 false);
 775   // This policy needs to be defined before the net subsystem is initialized,
 776   // so we do it here.
 777   registry->RegisterIntegerPref(prefs::kMaxConnectionsPerProxy,
 778                                 net::kDefaultMaxSocketsPerProxyServer);
 779
 780   registry->RegisterBooleanPref(prefs::kAllowCrossOriginAuthPrompt, false);
 781
 782 #if defined(OS_CHROMEOS) || defined(OS_ANDROID) || defined(OS_IOS)
 783   registry->RegisterBooleanPref(prefs::kEulaAccepted, false);
 784 #endif  // defined(OS_CHROMEOS) || defined(OS_ANDROID) || defined(OS_IOS)
 785 #if defined(OS_WIN)
 786   if (base::win::GetVersion() >= base::win::VERSION_WIN7) {
 787     registry->RegisterStringPref(prefs::kRelaunchMode,
 788                                  upgrade_util::kRelaunchModeDefault);
 789   }
 790 #endif
 791
 792   // TODO(brettw,*): this comment about ResourceBundle was here since
 793   // initial commit.  This comment seems unrelated, bit-rotten and
 794   // a candidate for removal.
 795   // Initialize ResourceBundle which handles files loaded from external
 796   // sources. This has to be done before uninstall code path and before prefs
 797   // are registered.
 798   registry->RegisterStringPref(prefs::kApplicationLocale, std::string());
 799 #if defined(OS_CHROMEOS)
 800   registry->RegisterStringPref(prefs::kOwnerLocale, std::string());
 801   registry->RegisterStringPref(prefs::kHardwareKeyboardLayout,
 802                                std::string());
 803 #endif  // defined(OS_CHROMEOS)
 804 #if !defined(OS_CHROMEOS)
 805   registry->RegisterBooleanPref(
 806       prefs::kMetricsReportingEnabled,
 807       GoogleUpdateSettings::GetCollectStatsConsent());
 808 #endif  // !defined(OS_CHROMEOS)
 809
 810 #if defined(OS_ANDROID)
 811   registry->RegisterBooleanPref(
 812       prefs::kCrashReportingEnabled, false);
 813 #endif  // defined(OS_ANDROID)
 814 }
 815
 816 DownloadRequestLimiter* BrowserProcessImpl::download_request_limiter() {
 817   DCHECK(CalledOnValidThread());
 818   if (!download_request_limiter_.get())
 819     download_request_limiter_ = new DownloadRequestLimiter();
 820   return download_request_limiter_.get();
 821 }
 822
 823 BackgroundModeManager* BrowserProcessImpl::background_mode_manager() {
 824   DCHECK(CalledOnValidThread());
 825 #if defined(ENABLE_BACKGROUND)
 826   if (!background_mode_manager_.get())
 827     CreateBackgroundModeManager();
 828   return background_mode_manager_.get();
 829 #else
 830   NOTIMPLEMENTED();
 831   return NULL;
 832 #endif
 833 }
 834
 835 void BrowserProcessImpl::set_background_mode_manager_for_test(
 836     scoped_ptr<BackgroundModeManager> manager) {
 837 #if defined(ENABLE_BACKGROUND)
 838   background_mode_manager_ = manager.Pass();
 839 #endif
 840 }
 841
 842 StatusTray* BrowserProcessImpl::status_tray() {
 843   DCHECK(CalledOnValidThread());
 844   if (!status_tray_.get())
 845     CreateStatusTray();
 846   return status_tray_.get();
 847 }
 848
 849
 850 SafeBrowsingService* BrowserProcessImpl::safe_browsing_service() {
 851   DCHECK(CalledOnValidThread());
 852   if (!created_safe_browsing_service_)
 853     CreateSafeBrowsingService();
 854   return safe_browsing_service_.get();
 855 }
 856
 857 safe_browsing::ClientSideDetectionService*
 858     BrowserProcessImpl::safe_browsing_detection_service() {
 859   DCHECK(CalledOnValidThread());
 860   if (safe_browsing_service())
 861     return safe_browsing_service()->safe_browsing_detection_service();
 862   return NULL;
 863 }
 864
 865 #if (defined(OS_WIN) || defined(OS_LINUX)) && !defined(OS_CHROMEOS)
 866 void BrowserProcessImpl::StartAutoupdateTimer() {
 867   autoupdate_timer_.Start(FROM_HERE,
 868       base::TimeDelta::FromHours(kUpdateCheckIntervalHours),
 869       this,
 870       &BrowserProcessImpl::OnAutoupdateTimer);
 871 }
 872 #endif
 873
 874 ChromeNetLog* BrowserProcessImpl::net_log() {
 875   return net_log_.get();
 876 }
 877
 878 prerender::PrerenderTracker* BrowserProcessImpl::prerender_tracker() {
 879   if (!prerender_tracker_.get())
 880     prerender_tracker_.reset(new prerender::PrerenderTracker);
 881
 882   return prerender_tracker_.get();
 883 }
 884
 885 component_updater::ComponentUpdateService*
 886 BrowserProcessImpl::component_updater() {
 887   if (!component_updater_.get()) {
 888     if (!BrowserThread::CurrentlyOn(BrowserThread::UI))
 889       return NULL;
 890     component_updater::Configurator* configurator =
 891         component_updater::MakeChromeComponentUpdaterConfigurator(
 892             CommandLine::ForCurrentProcess(),
 893             io_thread()->system_url_request_context_getter());
 894     // Creating the component updater does not do anything, components
 895     // need to be registered and Start() needs to be called.
 896     component_updater_.reset(ComponentUpdateServiceFactory(configurator));
 897   }
 898   return component_updater_.get();
 899 }
 900
 901 CRLSetFetcher* BrowserProcessImpl::crl_set_fetcher() {
 902   if (!crl_set_fetcher_.get())
 903     crl_set_fetcher_ = new CRLSetFetcher();
 904   return crl_set_fetcher_.get();
 905 }
 906
 907 component_updater::PnaclComponentInstaller*
 908 BrowserProcessImpl::pnacl_component_installer() {
 909 #if !defined(DISABLE_NACL)
 910   if (!pnacl_component_installer_.get()) {
 911     pnacl_component_installer_.reset(
 912         new component_updater::PnaclComponentInstaller());
 913   }
 914   return pnacl_component_installer_.get();
 915 #else
 916   return NULL;
 917 #endif
 918 }
 919
 920 void BrowserProcessImpl::ResourceDispatcherHostCreated() {
 921   resource_dispatcher_host_delegate_.reset(
 922       new ChromeResourceDispatcherHostDelegate(prerender_tracker()));
 923   ResourceDispatcherHost::Get()->SetDelegate(
 924       resource_dispatcher_host_delegate_.get());
 925
 926   pref_change_registrar_.Add(
 927       prefs::kAllowCrossOriginAuthPrompt,
 928       base::Bind(&BrowserProcessImpl::ApplyAllowCrossOriginAuthPromptPolicy,
 929                  base::Unretained(this)));
 930   ApplyAllowCrossOriginAuthPromptPolicy();
 931 }
 932
 933 void BrowserProcessImpl::CreateWatchdogThread() {
 934   DCHECK(!created_watchdog_thread_ && watchdog_thread_.get() == NULL);
 935   created_watchdog_thread_ = true;
 936
 937   scoped_ptr<WatchDogThread> thread(new WatchDogThread());
 938   base::Thread::Options options;
 939   options.timer_slack = base::TIMER_SLACK_MAXIMUM;
 940   if (!thread->StartWithOptions(options))
 941     return;
 942   watchdog_thread_.swap(thread);
 943 }
 944
 945 void BrowserProcessImpl::CreateProfileManager() {
 946   DCHECK(!created_profile_manager_ && profile_manager_.get() == NULL);
 947   created_profile_manager_ = true;
 948
 949   base::FilePath user_data_dir;
 950   PathService::Get(chrome::DIR_USER_DATA, &user_data_dir);
 951   profile_manager_.reset(new ProfileManager(user_data_dir));
 952 }
 953
 954 void BrowserProcessImpl::CreateLocalState() {
 955   DCHECK(!created_local_state_ && local_state_.get() == NULL);
 956   created_local_state_ = true;
 957
 958   base::FilePath local_state_path;
 959   CHECK(PathService::Get(chrome::FILE_LOCAL_STATE, &local_state_path));
 960   scoped_refptr<PrefRegistrySimple> pref_registry = new PrefRegistrySimple;
 961
 962   // Register local state preferences.
 963   chrome::RegisterLocalState(pref_registry.get());
 964
 965   local_state_ =
 966       chrome_prefs::CreateLocalState(local_state_path,
 967                                      local_state_task_runner_.get(),
 968                                      policy_service(),
 969                                      pref_registry,
 970                                      false).Pass();
 971
 972   pref_change_registrar_.Init(local_state_.get());
 973
 974   // Initialize the notification for the default browser setting policy.
 975   pref_change_registrar_.Add(
 976       prefs::kDefaultBrowserSettingEnabled,
 977       base::Bind(&BrowserProcessImpl::ApplyDefaultBrowserPolicy,
 978                  base::Unretained(this)));
 979
 980   // This preference must be kept in sync with external values; update them
 981   // whenever the preference or its controlling policy changes.
 982 #if !defined(OS_CHROMEOS) && !defined(OS_ANDROID) && !defined(OS_IOS)
 983   pref_change_registrar_.Add(
 984       prefs::kMetricsReportingEnabled,
 985       base::Bind(&BrowserProcessImpl::ApplyMetricsReportingPolicy,
 986                  base::Unretained(this)));
 987 #endif
 988
 989   int max_per_proxy = local_state_->GetInteger(prefs::kMaxConnectionsPerProxy);
 990   net::ClientSocketPoolManager::set_max_sockets_per_proxy_server(
 991       net::HttpNetworkSession::NORMAL_SOCKET_POOL,
 992       std::max(std::min(max_per_proxy, 99),
 993                net::ClientSocketPoolManager::max_sockets_per_group(
 994                    net::HttpNetworkSession::NORMAL_SOCKET_POOL)));
 995 }
 996
 997 void BrowserProcessImpl::PreCreateThreads() {
 998   io_thread_.reset(
 999       new IOThread(local_state(), policy_service(), net_log_.get(),
1000                    extension_event_router_forwarder()));
1001 }
1002
1003 void BrowserProcessImpl::PreMainMessageLoopRun() {
1004 #if defined(ENABLE_CONFIGURATION_POLICY)
1005   // browser_policy_connector() is created very early because local_state()
1006   // needs policy to be initialized with the managed preference values.
1007   // However, policy fetches from the network and loading of disk caches
1008   // requires that threads are running; this Init() call lets the connector
1009   // resume its initialization now that the loops are spinning and the
1010   // system request context is available for the fetchers.
1011   browser_policy_connector()->Init(local_state(), system_request_context());
1012 #endif
1013
1014   if (local_state_->IsManagedPreference(prefs::kDefaultBrowserSettingEnabled))
1015     ApplyDefaultBrowserPolicy();
1016
1017 #if !defined(OS_CHROMEOS) && !defined(OS_ANDROID) && !defined(OS_IOS)
1018   ApplyMetricsReportingPolicy();
1019 #endif
1020
1021 #if defined(ENABLE_PLUGINS)
1022   PluginService* plugin_service = PluginService::GetInstance();
1023   plugin_service->SetFilter(ChromePluginServiceFilter::GetInstance());
1024   plugin_service->StartWatchingPlugins();
1025
1026 #if defined(OS_POSIX)
1027   // Also find plugins in a user-specific plugins dir,
1028   // e.g. ~/.config/chromium/Plugins.
1029   const CommandLine& cmd_line = *CommandLine::ForCurrentProcess();
1030   if (!cmd_line.HasSwitch(switches::kDisablePluginsDiscovery)) {
1031     base::FilePath user_data_dir;
1032     if (PathService::Get(chrome::DIR_USER_DATA, &user_data_dir))
1033       plugin_service->AddExtraPluginDir(user_data_dir.Append("Plugins"));
1034   }
1035 #endif
1036
1037   // Triggers initialization of the singleton instance on UI thread.
1038   PluginFinder::GetInstance()->Init();
1039
1040 #if defined(ENABLE_PLUGIN_INSTALLATION)
1041   DCHECK(!plugins_resource_service_.get());
1042   plugins_resource_service_ = new PluginsResourceService(local_state());
1043   plugins_resource_service_->Init();
1044 #endif
1045 #endif  // defined(ENABLE_PLUGINS)
1046
1047   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
1048   if (!command_line.HasSwitch(switches::kDisableWebResources)) {
1049     DCHECK(!promo_resource_service_.get());
1050     promo_resource_service_ = new PromoResourceService;
1051     promo_resource_service_->StartAfterDelay();
1052   }
1053
1054 #if !defined(OS_ANDROID) && !defined(OS_IOS)
1055   storage_monitor::StorageMonitor::Create();
1056 #endif
1057
1058   platform_part_->PreMainMessageLoopRun();
1059 }
1060
1061 void BrowserProcessImpl::CreateIconManager() {
1062   DCHECK(!created_icon_manager_ && icon_manager_.get() == NULL);
1063   created_icon_manager_ = true;
1064   icon_manager_.reset(new IconManager);
1065 }
1066
1067 void BrowserProcessImpl::CreateIntranetRedirectDetector() {
1068   DCHECK(intranet_redirect_detector_.get() == NULL);
1069   scoped_ptr<IntranetRedirectDetector> intranet_redirect_detector(
1070       new IntranetRedirectDetector);
1071   intranet_redirect_detector_.swap(intranet_redirect_detector);
1072 }
1073
1074 void BrowserProcessImpl::CreateNotificationUIManager() {
1075 #if defined(ENABLE_NOTIFICATIONS)
1076   DCHECK(notification_ui_manager_.get() == NULL);
1077   notification_ui_manager_.reset(NotificationUIManager::Create(local_state()));
1078   created_notification_ui_manager_ = true;
1079 #endif
1080 }
1081
1082 void BrowserProcessImpl::CreateBackgroundModeManager() {
1083 #if defined(ENABLE_BACKGROUND)
1084   DCHECK(background_mode_manager_.get() == NULL);
1085   background_mode_manager_.reset(
1086       new BackgroundModeManager(CommandLine::ForCurrentProcess(),
1087                                 &profile_manager()->GetProfileInfoCache()));
1088 #endif
1089 }
1090
1091 void BrowserProcessImpl::CreateStatusTray() {
1092   DCHECK(status_tray_.get() == NULL);
1093   status_tray_.reset(StatusTray::Create());
1094 }
1095
1096 void BrowserProcessImpl::CreatePrintPreviewDialogController() {
1097 #if defined(ENABLE_PRINT_PREVIEW)
1098   DCHECK(print_preview_dialog_controller_.get() == NULL);
1099   print_preview_dialog_controller_ =
1100       new printing::PrintPreviewDialogController();
1101 #else
1102   NOTIMPLEMENTED();
1103 #endif
1104 }
1105
1106 void BrowserProcessImpl::CreateBackgroundPrintingManager() {
1107 #if defined(ENABLE_PRINT_PREVIEW)
1108   DCHECK(background_printing_manager_.get() == NULL);
1109   background_printing_manager_.reset(new printing::BackgroundPrintingManager());
1110 #else
1111   NOTIMPLEMENTED();
1112 #endif
1113 }
1114
1115 void BrowserProcessImpl::CreateSafeBrowsingService() {
1116   DCHECK(safe_browsing_service_.get() == NULL);
1117   // Set this flag to true so that we don't retry indefinitely to
1118   // create the service class if there was an error.
1119   created_safe_browsing_service_ = true;
1120 #if defined(FULL_SAFE_BROWSING) || defined(MOBILE_SAFE_BROWSING)
1121   safe_browsing_service_ = SafeBrowsingService::CreateSafeBrowsingService();
1122   safe_browsing_service_->Initialize();
1123 #endif
1124 }
1125
1126 void BrowserProcessImpl::CreateGCMDriver() {
1127   DCHECK(!gcm_driver_);
1128
1129 #if defined(OS_ANDROID)
1130   gcm_driver_.reset(new gcm::GCMDriverAndroid);
1131 #else
1132   base::FilePath store_path;
1133   CHECK(PathService::Get(chrome::DIR_GLOBAL_GCM_STORE, &store_path));
1134   gcm_driver_ = gcm::CreateGCMDriverDesktop(
1135       make_scoped_ptr(new gcm::GCMClientFactory),
1136       local_state(),
1137       store_path,
1138       system_request_context());
1139   // Sign-in is not required for device-level GCM usage. So we just call
1140   // OnSignedIn to assume always signed-in. Note that GCM will not be started
1141   // at this point since no one has asked for it yet.
1142   // TODO(jianli): To be removed when sign-in enforcement is dropped.
1143   gcm_driver_->OnSignedIn();
1144 #endif  // defined(OS_ANDROID)
1145 }
1146
1147 void BrowserProcessImpl::ApplyDefaultBrowserPolicy() {
1148   if (local_state()->GetBoolean(prefs::kDefaultBrowserSettingEnabled)) {
1149     scoped_refptr<ShellIntegration::DefaultWebClientWorker>
1150         set_browser_worker = new ShellIntegration::DefaultBrowserWorker(NULL);
1151     set_browser_worker->StartSetAsDefault();
1152   }
1153 }
1154
1155 void BrowserProcessImpl::ApplyAllowCrossOriginAuthPromptPolicy() {
1156   bool value = local_state()->GetBoolean(prefs::kAllowCrossOriginAuthPrompt);
1157   ResourceDispatcherHost::Get()->SetAllowCrossOriginAuthPrompt(value);
1158 }
1159
1160 void BrowserProcessImpl::ApplyMetricsReportingPolicy() {
1161 #if !defined(OS_CHROMEOS) && !defined(OS_ANDROID) && !defined(OS_IOS)
1162   CHECK(BrowserThread::PostTask(
1163       BrowserThread::FILE, FROM_HERE,
1164       base::Bind(
1165           base::IgnoreResult(&GoogleUpdateSettings::SetCollectStatsConsent),
1166           local_state()->GetBoolean(prefs::kMetricsReportingEnabled))));
1167 #endif
1168 }
1169
1170 // Mac is currently not supported.
1171 #if (defined(OS_WIN) || defined(OS_LINUX)) && !defined(OS_CHROMEOS)
1172
1173 bool BrowserProcessImpl::CanAutorestartForUpdate() const {
1174   // Check if browser is in the background and if it needs to be restarted to
1175   // apply a pending update.
1176   return chrome::GetTotalBrowserCount() == 0 && chrome::WillKeepAlive() &&
1177          upgrade_util::IsUpdatePendingRestart();
1178 }
1179
1180 // Switches to add when auto-restarting Chrome.
1181 const char* const kSwitchesToAddOnAutorestart[] = {
1182   switches::kNoStartupWindow
1183 };
1184
1185 void BrowserProcessImpl::RestartBackgroundInstance() {
1186   CommandLine* old_cl = CommandLine::ForCurrentProcess();
1187   scoped_ptr<CommandLine> new_cl(new CommandLine(old_cl->GetProgram()));
1188
1189   std::map<std::string, CommandLine::StringType> switches =
1190       old_cl->GetSwitches();
1191
1192   switches::RemoveSwitchesForAutostart(&switches);
1193
1194   // Append the rest of the switches (along with their values, if any)
1195   // to the new command line
1196   for (std::map<std::string, CommandLine::StringType>::const_iterator i =
1197       switches.begin(); i != switches.end(); ++i) {
1198       CommandLine::StringType switch_value = i->second;
1199       if (switch_value.length() > 0) {
1200         new_cl->AppendSwitchNative(i->first, i->second);
1201       } else {
1202         new_cl->AppendSwitch(i->first);
1203       }
1204   }
1205
1206   // Ensure that our desired switches are set on the new process.
1207   for (size_t i = 0; i < arraysize(kSwitchesToAddOnAutorestart); ++i) {
1208     if (!new_cl->HasSwitch(kSwitchesToAddOnAutorestart[i]))
1209       new_cl->AppendSwitch(kSwitchesToAddOnAutorestart[i]);
1210   }
1211
1212   DLOG(WARNING) << "Shutting down current instance of the browser.";
1213   chrome::AttemptExit();
1214
1215   // Transfer ownership to Upgrade.
1216   upgrade_util::SetNewCommandLine(new_cl.release());
1217 }
1218
1219 void BrowserProcessImpl::OnAutoupdateTimer() {
1220   if (CanAutorestartForUpdate()) {
1221     DLOG(WARNING) << "Detected update.  Restarting browser.";
1222     RestartBackgroundInstance();
1223   }
1224 }
1225
1226 #endif  // (defined(OS_WIN) || defined(OS_LINUX)) && !defined(OS_CHROMEOS)