src/chrome/browser/ui/webui/options/content_settings_handler.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/ui/webui/options/content_settings_handler.h"
   6
   7 #include <algorithm>
   8 #include <map>
   9 #include <vector>
  10
  11 #include "base/bind.h"
  12 #include "base/bind_helpers.h"
  13 #include "base/command_line.h"
  14 #include "base/prefs/pref_service.h"
  15 #include "base/strings/string_number_conversions.h"
  16 #include "base/strings/utf_string_conversions.h"
  17 #include "base/values.h"
  18 #include "chrome/browser/browser_process.h"
  19 #include "chrome/browser/chrome_notification_types.h"
  20 #include "chrome/browser/content_settings/content_settings_utils.h"
  21 #include "chrome/browser/content_settings/host_content_settings_map.h"
  22 #include "chrome/browser/custom_handlers/protocol_handler_registry.h"
  23 #include "chrome/browser/custom_handlers/protocol_handler_registry_factory.h"
  24 #include "chrome/browser/extensions/extension_special_storage_policy.h"
  25 #include "chrome/browser/notifications/desktop_notification_profile_util.h"
  26 #include "chrome/browser/profiles/profile.h"
  27 #include "chrome/browser/ui/browser_list.h"
  28 #include "chrome/common/chrome_switches.h"
  29 #include "chrome/common/extensions/manifest_handlers/app_launch_info.h"
  30 #include "chrome/common/pref_names.h"
  31 #include "chrome/common/url_constants.h"
  32 #include "chrome/grit/generated_resources.h"
  33 #include "chrome/grit/locale_settings.h"
  34 #include "components/content_settings/core/browser/content_settings_details.h"
  35 #include "components/content_settings/core/common/content_settings.h"
  36 #include "components/content_settings/core/common/content_settings_pattern.h"
  37 #include "components/google/core/browser/google_util.h"
  38 #include "components/user_prefs/user_prefs.h"
  39 #include "content/public/browser/notification_service.h"
  40 #include "content/public/browser/notification_source.h"
  41 #include "content/public/browser/notification_types.h"
  42 #include "content/public/browser/user_metrics.h"
  43 #include "content/public/browser/web_contents.h"
  44 #include "content/public/browser/web_ui.h"
  45 #include "content/public/common/content_switches.h"
  46 #include "content/public/common/page_zoom.h"
  47 #include "extensions/browser/extension_registry.h"
  48 #include "extensions/common/extension_set.h"
  49 #include "extensions/common/permissions/api_permission.h"
  50 #include "extensions/common/permissions/permissions_data.h"
  51 #include "ui/base/l10n/l10n_util.h"
  52
  53 #if defined(OS_CHROMEOS)
  54 #include "components/user_manager/user_manager.h"
  55 #endif
  56
  57 using base::UserMetricsAction;
  58 using content_settings::ContentSettingToString;
  59 using content_settings::ContentSettingFromString;
  60 using extensions::APIPermission;
  61
  62 namespace {
  63
  64 struct ContentSettingsTypeNameEntry {
  65   ContentSettingsType type;
  66   const char* name;
  67 };
  68
  69 // Maps from a secondary pattern to a setting.
  70 typedef std::map<ContentSettingsPattern, ContentSetting>
  71     OnePatternSettings;
  72 // Maps from a primary pattern/source pair to a OnePatternSettings. All the
  73 // mappings in OnePatternSettings share the given primary pattern and source.
  74 typedef std::map<std::pair<ContentSettingsPattern, std::string>,
  75                  OnePatternSettings>
  76     AllPatternsSettings;
  77
  78 // The AppFilter is used in AddExceptionsGrantedByHostedApps() to choose
  79 // extensions which should have their extent displayed.
  80 typedef bool (*AppFilter)(const extensions::Extension& app,
  81                           content::BrowserContext* profile);
  82
  83 const char kExceptionsLearnMoreUrl[] =
  84     "https://support.google.com/chrome/?p=settings_manage_exceptions";
  85
  86 const char* kSetting = "setting";
  87 const char* kOrigin = "origin";
  88 const char* kSource = "source";
  89 const char* kAppName = "appName";
  90 const char* kAppId = "appId";
  91 const char* kEmbeddingOrigin = "embeddingOrigin";
  92 const char* kPreferencesSource = "preference";
  93 const char* kVideoSetting = "video";
  94 const char* kZoom = "zoom";
  95
  96 const ContentSettingsTypeNameEntry kContentSettingsTypeGroupNames[] = {
  97   {CONTENT_SETTINGS_TYPE_COOKIES, "cookies"},
  98   {CONTENT_SETTINGS_TYPE_IMAGES, "images"},
  99   {CONTENT_SETTINGS_TYPE_JAVASCRIPT, "javascript"},
 100   {CONTENT_SETTINGS_TYPE_PLUGINS, "plugins"},
 101   {CONTENT_SETTINGS_TYPE_POPUPS, "popups"},
 102   {CONTENT_SETTINGS_TYPE_GEOLOCATION, "location"},
 103   {CONTENT_SETTINGS_TYPE_NOTIFICATIONS, "notifications"},
 104   {CONTENT_SETTINGS_TYPE_AUTO_SELECT_CERTIFICATE, "auto-select-certificate"},
 105   {CONTENT_SETTINGS_TYPE_FULLSCREEN, "fullscreen"},
 106   {CONTENT_SETTINGS_TYPE_MOUSELOCK, "mouselock"},
 107   {CONTENT_SETTINGS_TYPE_PROTOCOL_HANDLERS, "register-protocol-handler"},
 108   {CONTENT_SETTINGS_TYPE_MEDIASTREAM, "media-stream"},
 109   {CONTENT_SETTINGS_TYPE_MEDIASTREAM_MIC, "media-stream-mic"},
 110   {CONTENT_SETTINGS_TYPE_MEDIASTREAM_CAMERA, "media-stream-camera"},
 111   {CONTENT_SETTINGS_TYPE_PPAPI_BROKER, "ppapi-broker"},
 112   {CONTENT_SETTINGS_TYPE_AUTOMATIC_DOWNLOADS, "multiple-automatic-downloads"},
 113   {CONTENT_SETTINGS_TYPE_MIDI_SYSEX, "midi-sysex"},
 114   {CONTENT_SETTINGS_TYPE_PUSH_MESSAGING, "push-messaging"},
 115   {CONTENT_SETTINGS_TYPE_SSL_CERT_DECISIONS, "ssl-cert-decisions"},
 116 #if defined(OS_CHROMEOS)
 117   {CONTENT_SETTINGS_TYPE_PROTECTED_MEDIA_IDENTIFIER, "protectedContent"},
 118 #endif
 119 };
 120
 121 // A pseudo content type. We use it to display data like a content setting even
 122 // though it is not a real content setting.
 123 const char* kZoomContentType = "zoomlevels";
 124
 125 content::BrowserContext* GetBrowserContext(content::WebUI* web_ui) {
 126   return web_ui->GetWebContents()->GetBrowserContext();
 127 }
 128
 129 ContentSettingsType ContentSettingsTypeFromGroupName(const std::string& name) {
 130   for (size_t i = 0; i < arraysize(kContentSettingsTypeGroupNames); ++i) {
 131     if (name == kContentSettingsTypeGroupNames[i].name)
 132       return kContentSettingsTypeGroupNames[i].type;
 133   }
 134
 135   NOTREACHED() << name << " is not a recognized content settings type.";
 136   return CONTENT_SETTINGS_TYPE_DEFAULT;
 137 }
 138
 139 // Create a DictionaryValue* that will act as a data source for a single row
 140 // in a HostContentSettingsMap-controlled exceptions table (e.g., cookies).
 141 // Ownership of the pointer is passed to the caller.
 142 base::DictionaryValue* GetExceptionForPage(
 143     const ContentSettingsPattern& pattern,
 144     const ContentSettingsPattern& secondary_pattern,
 145     const ContentSetting& setting,
 146     const std::string& provider_name) {
 147   base::DictionaryValue* exception = new base::DictionaryValue();
 148   exception->SetString(kOrigin, pattern.ToString());
 149   exception->SetString(kEmbeddingOrigin,
 150                        secondary_pattern == ContentSettingsPattern::Wildcard() ?
 151                            std::string() :
 152                            secondary_pattern.ToString());
 153   exception->SetString(kSetting, ContentSettingToString(setting));
 154   exception->SetString(kSource, provider_name);
 155   return exception;
 156 }
 157
 158 // Create a DictionaryValue* that will act as a data source for a single row
 159 // in the Geolocation exceptions table. Ownership of the pointer is passed to
 160 // the caller.
 161 base::DictionaryValue* GetGeolocationExceptionForPage(
 162     const ContentSettingsPattern& origin,
 163     const ContentSettingsPattern& embedding_origin,
 164     ContentSetting setting) {
 165   base::DictionaryValue* exception = new base::DictionaryValue();
 166   exception->SetString(kSetting, ContentSettingToString(setting));
 167   exception->SetString(kOrigin, origin.ToString());
 168   exception->SetString(kEmbeddingOrigin, embedding_origin.ToString());
 169   return exception;
 170 }
 171
 172 // Create a DictionaryValue* that will act as a data source for a single row
 173 // in the desktop notifications exceptions table. Ownership of the pointer is
 174 // passed to the caller.
 175 base::DictionaryValue* GetNotificationExceptionForPage(
 176     const ContentSettingsPattern& primary_pattern,
 177     const ContentSettingsPattern& secondary_pattern,
 178     ContentSetting setting,
 179     const std::string& provider_name) {
 180   std::string embedding_origin;
 181   if (secondary_pattern != ContentSettingsPattern::Wildcard())
 182     embedding_origin = secondary_pattern.ToString();
 183
 184   base::DictionaryValue* exception = new base::DictionaryValue();
 185   exception->SetString(kSetting, ContentSettingToString(setting));
 186   exception->SetString(kOrigin, primary_pattern.ToString());
 187   exception->SetString(kEmbeddingOrigin, embedding_origin);
 188   exception->SetString(kSource, provider_name);
 189   return exception;
 190 }
 191
 192 // Returns true whenever the |extension| is hosted and has |permission|.
 193 // Must have the AppFilter signature.
 194 template <APIPermission::ID permission>
 195 bool HostedAppHasPermission(const extensions::Extension& extension,
 196                             content::BrowserContext* /* context */) {
 197   return extension.is_hosted_app() &&
 198          extension.permissions_data()->HasAPIPermission(permission);
 199 }
 200
 201 // Add an "Allow"-entry to the list of |exceptions| for a |url_pattern| from
 202 // the web extent of a hosted |app|.
 203 void AddExceptionForHostedApp(const std::string& url_pattern,
 204     const extensions::Extension& app, base::ListValue* exceptions) {
 205   base::DictionaryValue* exception = new base::DictionaryValue();
 206   exception->SetString(kSetting, ContentSettingToString(CONTENT_SETTING_ALLOW));
 207   exception->SetString(kOrigin, url_pattern);
 208   exception->SetString(kEmbeddingOrigin, url_pattern);
 209   exception->SetString(kSource, "HostedApp");
 210   exception->SetString(kAppName, app.name());
 211   exception->SetString(kAppId, app.id());
 212   exceptions->Append(exception);
 213 }
 214
 215 // Asks the |profile| for hosted apps which have the |permission| set, and
 216 // adds their web extent and launch URL to the |exceptions| list.
 217 void AddExceptionsGrantedByHostedApps(content::BrowserContext* context,
 218                                       AppFilter app_filter,
 219                                       base::ListValue* exceptions) {
 220   const extensions::ExtensionSet& extensions =
 221       extensions::ExtensionRegistry::Get(context)->enabled_extensions();
 222   for (extensions::ExtensionSet::const_iterator extension = extensions.begin();
 223        extension != extensions.end(); ++extension) {
 224     if (!app_filter(*extension->get(), context))
 225       continue;
 226
 227     extensions::URLPatternSet web_extent = (*extension)->web_extent();
 228     // Add patterns from web extent.
 229     for (extensions::URLPatternSet::const_iterator pattern = web_extent.begin();
 230          pattern != web_extent.end(); ++pattern) {
 231       std::string url_pattern = pattern->GetAsString();
 232       AddExceptionForHostedApp(url_pattern, *extension->get(), exceptions);
 233     }
 234     // Retrieve the launch URL.
 235     GURL launch_url =
 236         extensions::AppLaunchInfo::GetLaunchWebURL(extension->get());
 237     // Skip adding the launch URL if it is part of the web extent.
 238     if (web_extent.MatchesURL(launch_url))
 239       continue;
 240     AddExceptionForHostedApp(launch_url.spec(), *extension->get(), exceptions);
 241   }
 242 }
 243
 244 // Sort ZoomLevelChanges by host and scheme
 245 // (a.com < http://a.com < https://a.com < b.com).
 246 bool HostZoomSort(const content::HostZoomMap::ZoomLevelChange& a,
 247                   const content::HostZoomMap::ZoomLevelChange& b) {
 248   return a.host == b.host ? a.scheme < b.scheme : a.host < b.host;
 249 }
 250
 251 }  // namespace
 252
 253 namespace options {
 254
 255 ContentSettingsHandler::MediaSettingsInfo::MediaSettingsInfo()
 256     : flash_default_setting(CONTENT_SETTING_DEFAULT),
 257       flash_settings_initialized(false),
 258       last_flash_refresh_request_id(0),
 259       show_flash_default_link(false),
 260       show_flash_exceptions_link(false),
 261       default_setting(CONTENT_SETTING_DEFAULT),
 262       policy_disable_audio(false),
 263       policy_disable_video(false),
 264       default_setting_initialized(false),
 265       exceptions_initialized(false) {
 266 }
 267
 268 ContentSettingsHandler::MediaSettingsInfo::~MediaSettingsInfo() {
 269 }
 270
 271 ContentSettingsHandler::ContentSettingsHandler() : observer_(this) {
 272 }
 273
 274 ContentSettingsHandler::~ContentSettingsHandler() {
 275 }
 276
 277 void ContentSettingsHandler::GetLocalizedValues(
 278     base::DictionaryValue* localized_strings) {
 279   DCHECK(localized_strings);
 280
 281   // TODO(dhnishi): Standardize to lowerCamelCase.
 282   static OptionsStringResource resources[] = {
 283     { "allowException", IDS_EXCEPTIONS_ALLOW_BUTTON },
 284     { "blockException", IDS_EXCEPTIONS_BLOCK_BUTTON },
 285     { "sessionException", IDS_EXCEPTIONS_SESSION_ONLY_BUTTON },
 286     { "askException", IDS_EXCEPTIONS_ASK_BUTTON },
 287     { "otr_exceptions_explanation", IDS_EXCEPTIONS_OTR_LABEL },
 288     { "addNewExceptionInstructions", IDS_EXCEPTIONS_ADD_NEW_INSTRUCTIONS },
 289     { "manageExceptions", IDS_EXCEPTIONS_MANAGE },
 290     { "manage_handlers", IDS_HANDLERS_MANAGE },
 291     { "exceptionPatternHeader", IDS_EXCEPTIONS_PATTERN_HEADER },
 292     { "exceptionBehaviorHeader", IDS_EXCEPTIONS_ACTION_HEADER },
 293     { "exceptionZoomHeader", IDS_EXCEPTIONS_ZOOM_HEADER },
 294     { "embeddedOnHost", IDS_EXCEPTIONS_GEOLOCATION_EMBEDDED_ON_HOST },
 295     // Cookies filter.
 296     { "cookiesTabLabel", IDS_COOKIES_TAB_LABEL },
 297     { "cookies_header", IDS_COOKIES_HEADER },
 298     { "cookiesAllow", IDS_COOKIES_ALLOW_RADIO },
 299     { "cookiesBlock", IDS_COOKIES_BLOCK_RADIO },
 300     { "cookies_session_only", IDS_COOKIES_SESSION_ONLY_RADIO },
 301     { "cookies_block_3rd_party", IDS_COOKIES_BLOCK_3RDPARTY_CHKBOX },
 302     { "cookies_clear_when_close", IDS_COOKIES_CLEAR_WHEN_CLOSE_CHKBOX },
 303     { "cookies_lso_clear_when_close", IDS_COOKIES_LSO_CLEAR_WHEN_CLOSE_CHKBOX },
 304     { "cookies_show_cookies", IDS_COOKIES_SHOW_COOKIES_BUTTON },
 305     { "flash_storage_settings", IDS_FLASH_STORAGE_SETTINGS },
 306     { "flash_storage_url", IDS_FLASH_STORAGE_URL },
 307 #if defined(ENABLE_GOOGLE_NOW)
 308     { "googleGeolocationAccessEnable",
 309        IDS_GEOLOCATION_GOOGLE_ACCESS_ENABLE_CHKBOX },
 310 #endif
 311     // Image filter.
 312     { "imagesTabLabel", IDS_IMAGES_TAB_LABEL },
 313     { "images_header", IDS_IMAGES_HEADER },
 314     { "imagesAllow", IDS_IMAGES_LOAD_RADIO },
 315     { "imagesBlock", IDS_IMAGES_NOLOAD_RADIO },
 316     // JavaScript filter.
 317     { "javascriptTabLabel", IDS_JAVASCRIPT_TAB_LABEL },
 318     { "javascript_header", IDS_JAVASCRIPT_HEADER },
 319     { "javascriptAllow", IDS_JS_ALLOW_RADIO },
 320     { "javascriptBlock", IDS_JS_DONOTALLOW_RADIO },
 321     // Plug-ins filter.
 322     { "pluginsTabLabel", IDS_PLUGIN_TAB_LABEL },
 323     { "plugins_header", IDS_PLUGIN_HEADER },
 324     { "pluginsAsk", IDS_PLUGIN_ASK_RADIO },
 325     { "pluginsAllow", IDS_PLUGIN_LOAD_RADIO },
 326     { "pluginsBlock", IDS_PLUGIN_NOLOAD_RADIO },
 327     { "disableIndividualPlugins", IDS_PLUGIN_SELECTIVE_DISABLE },
 328     // Pop-ups filter.
 329     { "popupsTabLabel", IDS_POPUP_TAB_LABEL },
 330     { "popups_header", IDS_POPUP_HEADER },
 331     { "popupsAllow", IDS_POPUP_ALLOW_RADIO },
 332     { "popupsBlock", IDS_POPUP_BLOCK_RADIO },
 333     // Location filter.
 334     { "locationTabLabel", IDS_GEOLOCATION_TAB_LABEL },
 335     { "location_header", IDS_GEOLOCATION_HEADER },
 336     { "locationAllow", IDS_GEOLOCATION_ALLOW_RADIO },
 337     { "locationAsk", IDS_GEOLOCATION_ASK_RADIO },
 338     { "locationBlock", IDS_GEOLOCATION_BLOCK_RADIO },
 339     { "set_by", IDS_GEOLOCATION_SET_BY_HOVER },
 340     // Notifications filter.
 341     { "notificationsTabLabel", IDS_NOTIFICATIONS_TAB_LABEL },
 342     { "notifications_header", IDS_NOTIFICATIONS_HEADER },
 343     { "notificationsAllow", IDS_NOTIFICATIONS_ALLOW_RADIO },
 344     { "notificationsAsk", IDS_NOTIFICATIONS_ASK_RADIO },
 345     { "notificationsBlock", IDS_NOTIFICATIONS_BLOCK_RADIO },
 346     // Fullscreen filter.
 347     { "fullscreenTabLabel", IDS_FULLSCREEN_TAB_LABEL },
 348     { "fullscreen_header", IDS_FULLSCREEN_HEADER },
 349     // Mouse Lock filter.
 350     { "mouselockTabLabel", IDS_MOUSE_LOCK_TAB_LABEL },
 351     { "mouselock_header", IDS_MOUSE_LOCK_HEADER },
 352     { "mouselockAllow", IDS_MOUSE_LOCK_ALLOW_RADIO },
 353     { "mouselockAsk", IDS_MOUSE_LOCK_ASK_RADIO },
 354     { "mouselockBlock", IDS_MOUSE_LOCK_BLOCK_RADIO },
 355 #if defined(OS_CHROMEOS) || defined(OS_WIN)
 356     // Protected Content filter
 357     { "protectedContentTabLabel", IDS_PROTECTED_CONTENT_TAB_LABEL },
 358     { "protectedContentInfo", IDS_PROTECTED_CONTENT_INFO },
 359     { "protectedContentEnable", IDS_PROTECTED_CONTENT_ENABLE },
 360     { "protectedContent_header", IDS_PROTECTED_CONTENT_HEADER },
 361 #endif  // defined(OS_CHROMEOS) || defined(OS_WIN)
 362     // Media stream capture device filter.
 363     { "mediaStreamTabLabel", IDS_MEDIA_STREAM_TAB_LABEL },
 364     { "media-stream_header", IDS_MEDIA_STREAM_HEADER },
 365     { "mediaStreamAsk", IDS_MEDIA_STREAM_ASK_RADIO },
 366     { "mediaStreamBlock", IDS_MEDIA_STREAM_BLOCK_RADIO },
 367     { "mediaStreamAudioAsk", IDS_MEDIA_STREAM_ASK_AUDIO_ONLY_RADIO },
 368     { "mediaStreamAudioBlock", IDS_MEDIA_STREAM_BLOCK_AUDIO_ONLY_RADIO },
 369     { "mediaStreamVideoAsk", IDS_MEDIA_STREAM_ASK_VIDEO_ONLY_RADIO },
 370     { "mediaStreamVideoBlock", IDS_MEDIA_STREAM_BLOCK_VIDEO_ONLY_RADIO },
 371     { "mediaStreamBubbleAudio", IDS_MEDIA_STREAM_AUDIO_MANAGED },
 372     { "mediaStreamBubbleVideo", IDS_MEDIA_STREAM_VIDEO_MANAGED },
 373     { "mediaAudioExceptionHeader", IDS_MEDIA_AUDIO_EXCEPTION_HEADER },
 374     { "mediaVideoExceptionHeader", IDS_MEDIA_VIDEO_EXCEPTION_HEADER },
 375     { "mediaPepperFlashDefaultDivergedLabel",
 376       IDS_MEDIA_PEPPER_FLASH_DEFAULT_DIVERGED_LABEL },
 377     { "mediaPepperFlashExceptionsDivergedLabel",
 378       IDS_MEDIA_PEPPER_FLASH_EXCEPTIONS_DIVERGED_LABEL },
 379     { "mediaPepperFlashChangeLink", IDS_MEDIA_PEPPER_FLASH_CHANGE_LINK },
 380     { "mediaPepperFlashGlobalPrivacyURL", IDS_FLASH_GLOBAL_PRIVACY_URL },
 381     { "mediaPepperFlashWebsitePrivacyURL", IDS_FLASH_WEBSITE_PRIVACY_URL },
 382     // PPAPI broker filter.
 383     { "ppapi-broker_header", IDS_PPAPI_BROKER_HEADER },
 384     { "ppapiBrokerTabLabel", IDS_PPAPI_BROKER_TAB_LABEL },
 385     { "ppapiBrokerAllow", IDS_PPAPI_BROKER_ALLOW_RADIO },
 386     { "ppapiBrokerAsk", IDS_PPAPI_BROKER_ASK_RADIO },
 387     { "ppapiBrokerBlock", IDS_PPAPI_BROKER_BLOCK_RADIO },
 388     // Multiple automatic downloads
 389     { "multipleAutomaticDownloadsTabLabel",
 390       IDS_AUTOMATIC_DOWNLOADS_TAB_LABEL },
 391     { "multipleAutomaticDownloadsAllow",
 392       IDS_AUTOMATIC_DOWNLOADS_ALLOW_RADIO },
 393     { "multipleAutomaticDownloadsAsk",
 394       IDS_AUTOMATIC_DOWNLOADS_ASK_RADIO },
 395     { "multipleAutomaticDownloadsBlock",
 396       IDS_AUTOMATIC_DOWNLOADS_BLOCK_RADIO },
 397     // MIDI system exclusive messages
 398     { "midi-sysex_header", IDS_MIDI_SYSEX_TAB_LABEL },
 399     { "midiSysExAllow", IDS_MIDI_SYSEX_ALLOW_RADIO },
 400     { "midiSysExAsk", IDS_MIDI_SYSEX_ASK_RADIO },
 401     { "midiSysExBlock", IDS_MIDI_SYSEX_BLOCK_RADIO },
 402     // Push messaging strings
 403     { "push-messaging_header", IDS_PUSH_MESSAGES_TAB_LABEL },
 404     { "pushMessagingAllow", IDS_PUSH_MESSSAGING_ALLOW_RADIO },
 405     { "pushMessagingAsk", IDS_PUSH_MESSSAGING_ASK_RADIO },
 406     { "pushMessagingBlock", IDS_PUSH_MESSSAGING_BLOCK_RADIO },
 407     { "zoomlevels_header", IDS_ZOOMLEVELS_HEADER_AND_TAB_LABEL },
 408     { "zoomLevelsManage", IDS_ZOOMLEVELS_MANAGE_BUTTON },
 409   };
 410
 411   RegisterStrings(localized_strings, resources, arraysize(resources));
 412   RegisterTitle(localized_strings, "contentSettingsPage",
 413                 IDS_CONTENT_SETTINGS_TITLE);
 414
 415   // Register titles for each of the individual settings whose exception
 416   // dialogs will be processed by |ContentSettingsHandler|.
 417   RegisterTitle(localized_strings, "cookies",
 418                 IDS_COOKIES_TAB_LABEL);
 419   RegisterTitle(localized_strings, "images",
 420                 IDS_IMAGES_TAB_LABEL);
 421   RegisterTitle(localized_strings, "javascript",
 422                 IDS_JAVASCRIPT_TAB_LABEL);
 423   RegisterTitle(localized_strings, "plugins",
 424                 IDS_PLUGIN_TAB_LABEL);
 425   RegisterTitle(localized_strings, "popups",
 426                 IDS_POPUP_TAB_LABEL);
 427   RegisterTitle(localized_strings, "location",
 428                 IDS_GEOLOCATION_TAB_LABEL);
 429   RegisterTitle(localized_strings, "notifications",
 430                 IDS_NOTIFICATIONS_TAB_LABEL);
 431   RegisterTitle(localized_strings, "fullscreen",
 432                 IDS_FULLSCREEN_TAB_LABEL);
 433   RegisterTitle(localized_strings, "mouselock",
 434                 IDS_MOUSE_LOCK_TAB_LABEL);
 435 #if defined(OS_CHROMEOS)
 436   RegisterTitle(localized_strings, "protectedContent",
 437                 IDS_PROTECTED_CONTENT_TAB_LABEL);
 438 #endif
 439   RegisterTitle(localized_strings, "media-stream",
 440                 IDS_MEDIA_STREAM_TAB_LABEL);
 441   RegisterTitle(localized_strings, "ppapi-broker",
 442                 IDS_PPAPI_BROKER_TAB_LABEL);
 443   RegisterTitle(localized_strings, "multiple-automatic-downloads",
 444                 IDS_AUTOMATIC_DOWNLOADS_TAB_LABEL);
 445   RegisterTitle(localized_strings, "midi-sysex",
 446                 IDS_MIDI_SYSEX_TAB_LABEL);
 447   RegisterTitle(localized_strings, "zoomlevels",
 448                 IDS_ZOOMLEVELS_HEADER_AND_TAB_LABEL);
 449
 450   localized_strings->SetString("exceptionsLearnMoreUrl",
 451                                kExceptionsLearnMoreUrl);
 452 }
 453
 454 void ContentSettingsHandler::InitializeHandler() {
 455   notification_registrar_.Add(
 456       this, chrome::NOTIFICATION_PROFILE_CREATED,
 457       content::NotificationService::AllSources());
 458   notification_registrar_.Add(
 459       this, chrome::NOTIFICATION_PROFILE_DESTROYED,
 460       content::NotificationService::AllSources());
 461
 462   notification_registrar_.Add(
 463       this, chrome::NOTIFICATION_DESKTOP_NOTIFICATION_SETTINGS_CHANGED,
 464       content::NotificationService::AllSources());
 465   content::BrowserContext* context = GetBrowserContext(web_ui());
 466   notification_registrar_.Add(
 467       this, chrome::NOTIFICATION_PROTOCOL_HANDLER_REGISTRY_CHANGED,
 468       content::Source<content::BrowserContext>(context));
 469
 470   PrefService* prefs = user_prefs::UserPrefs::Get(context);
 471   pref_change_registrar_.Init(prefs);
 472   pref_change_registrar_.Add(
 473       prefs::kPepperFlashSettingsEnabled,
 474       base::Bind(&ContentSettingsHandler::OnPepperFlashPrefChanged,
 475                  base::Unretained(this)));
 476   pref_change_registrar_.Add(
 477       prefs::kAudioCaptureAllowed,
 478       base::Bind(&ContentSettingsHandler::UpdateMediaSettingsView,
 479                  base::Unretained(this)));
 480   pref_change_registrar_.Add(
 481       prefs::kVideoCaptureAllowed,
 482       base::Bind(&ContentSettingsHandler::UpdateMediaSettingsView,
 483                  base::Unretained(this)));
 484   pref_change_registrar_.Add(
 485       prefs::kEnableDRM,
 486       base::Bind(
 487           &ContentSettingsHandler::UpdateProtectedContentExceptionsButton,
 488           base::Unretained(this)));
 489
 490   content::HostZoomMap* host_zoom_map =
 491       content::HostZoomMap::GetDefaultForBrowserContext(context);
 492   host_zoom_map_subscription_ =
 493       host_zoom_map->AddZoomLevelChangedCallback(
 494           base::Bind(&ContentSettingsHandler::OnZoomLevelChanged,
 495                      base::Unretained(this)));
 496
 497   flash_settings_manager_.reset(new PepperFlashSettingsManager(this, context));
 498   observer_.Add(Profile::FromWebUI(web_ui())->GetHostContentSettingsMap());
 499 }
 500
 501 void ContentSettingsHandler::InitializePage() {
 502   media_settings_ = MediaSettingsInfo();
 503   RefreshFlashMediaSettings();
 504
 505   UpdateHandlersEnabledRadios();
 506   UpdateAllExceptionsViewsFromModel();
 507   UpdateProtectedContentExceptionsButton();
 508 }
 509
 510 void ContentSettingsHandler::OnContentSettingChanged(
 511     const ContentSettingsPattern& primary_pattern,
 512     const ContentSettingsPattern& secondary_pattern,
 513     ContentSettingsType content_type,
 514     std::string resource_identifier) {
 515   const ContentSettingsDetails details(
 516       primary_pattern, secondary_pattern, content_type, resource_identifier);
 517   // TODO(estade): we pretend update_all() is always true.
 518   if (details.update_all_types())
 519     UpdateAllExceptionsViewsFromModel();
 520   else
 521     UpdateExceptionsViewFromModel(details.type());
 522 }
 523
 524 void ContentSettingsHandler::Observe(
 525     int type,
 526     const content::NotificationSource& source,
 527     const content::NotificationDetails& details) {
 528   switch (type) {
 529     case chrome::NOTIFICATION_PROFILE_DESTROYED: {
 530       if (content::Source<Profile>(source).ptr()->IsOffTheRecord()) {
 531         web_ui()->CallJavascriptFunction(
 532             "ContentSettingsExceptionsArea.OTRProfileDestroyed");
 533       }
 534       break;
 535     }
 536
 537     case chrome::NOTIFICATION_PROFILE_CREATED: {
 538       if (content::Source<Profile>(source).ptr()->IsOffTheRecord())
 539         UpdateAllOTRExceptionsViewsFromModel();
 540       break;
 541     }
 542
 543     case chrome::NOTIFICATION_DESKTOP_NOTIFICATION_SETTINGS_CHANGED: {
 544       UpdateNotificationExceptionsView();
 545       break;
 546     }
 547
 548     case chrome::NOTIFICATION_PROTOCOL_HANDLER_REGISTRY_CHANGED: {
 549       UpdateHandlersEnabledRadios();
 550       break;
 551     }
 552   }
 553 }
 554
 555 void ContentSettingsHandler::OnGetPermissionSettingsCompleted(
 556     uint32 request_id,
 557     bool success,
 558     PP_Flash_BrowserOperations_Permission default_permission,
 559     const ppapi::FlashSiteSettings& sites) {
 560   if (success && request_id == media_settings_.last_flash_refresh_request_id) {
 561     media_settings_.flash_settings_initialized = true;
 562     media_settings_.flash_default_setting =
 563         PepperFlashContentSettingsUtils::FlashPermissionToContentSetting(
 564             default_permission);
 565     PepperFlashContentSettingsUtils::FlashSiteSettingsToMediaExceptions(
 566         sites, &media_settings_.flash_exceptions);
 567     PepperFlashContentSettingsUtils::SortMediaExceptions(
 568         &media_settings_.flash_exceptions);
 569
 570     UpdateFlashMediaLinksVisibility();
 571   }
 572 }
 573
 574 void ContentSettingsHandler::UpdateSettingDefaultFromModel(
 575     ContentSettingsType type) {
 576   base::DictionaryValue filter_settings;
 577   std::string provider_id;
 578   filter_settings.SetString(ContentSettingsTypeToGroupName(type) + ".value",
 579                             GetSettingDefaultFromModel(type, &provider_id));
 580   filter_settings.SetString(
 581       ContentSettingsTypeToGroupName(type) + ".managedBy", provider_id);
 582
 583   web_ui()->CallJavascriptFunction(
 584       "ContentSettings.setContentFilterSettingsValue", filter_settings);
 585 }
 586
 587 void ContentSettingsHandler::UpdateMediaSettingsView() {
 588   PrefService* prefs = user_prefs::UserPrefs::Get(GetBrowserContext(web_ui()));
 589   bool audio_disabled = !prefs->GetBoolean(prefs::kAudioCaptureAllowed) &&
 590       prefs->IsManagedPreference(prefs::kAudioCaptureAllowed);
 591   bool video_disabled = !prefs->GetBoolean(prefs::kVideoCaptureAllowed) &&
 592       prefs->IsManagedPreference(prefs::kVideoCaptureAllowed);
 593
 594   media_settings_.policy_disable_audio = audio_disabled;
 595   media_settings_.policy_disable_video = video_disabled;
 596   media_settings_.default_setting =
 597       GetContentSettingsMap()->GetDefaultContentSetting(
 598           CONTENT_SETTINGS_TYPE_MEDIASTREAM, NULL);
 599   media_settings_.default_setting_initialized = true;
 600   UpdateFlashMediaLinksVisibility();
 601
 602   base::DictionaryValue media_ui_settings;
 603   media_ui_settings.SetBoolean("cameraDisabled", video_disabled);
 604   media_ui_settings.SetBoolean("micDisabled", audio_disabled);
 605
 606   // In case only video is enabled change the text appropriately.
 607   if (audio_disabled && !video_disabled) {
 608     media_ui_settings.SetString("askText", "mediaStreamVideoAsk");
 609     media_ui_settings.SetString("blockText", "mediaStreamVideoBlock");
 610     media_ui_settings.SetBoolean("showBubble", true);
 611     media_ui_settings.SetString("bubbleText", "mediaStreamBubbleAudio");
 612
 613     web_ui()->CallJavascriptFunction("ContentSettings.updateMediaUI",
 614                                      media_ui_settings);
 615     return;
 616   }
 617
 618   // In case only audio is enabled change the text appropriately.
 619   if (video_disabled && !audio_disabled) {
 620     base::DictionaryValue media_ui_settings;
 621     media_ui_settings.SetString("askText", "mediaStreamAudioAsk");
 622     media_ui_settings.SetString("blockText", "mediaStreamAudioBlock");
 623     media_ui_settings.SetBoolean("showBubble", true);
 624     media_ui_settings.SetString("bubbleText", "mediaStreamBubbleVideo");
 625
 626     web_ui()->CallJavascriptFunction("ContentSettings.updateMediaUI",
 627                                      media_ui_settings);
 628     return;
 629   }
 630
 631   if (audio_disabled && video_disabled) {
 632     // Fake policy controlled default because the user can not change anything
 633     // until both audio and video are blocked.
 634     base::DictionaryValue filter_settings;
 635     std::string group_name =
 636         ContentSettingsTypeToGroupName(CONTENT_SETTINGS_TYPE_MEDIASTREAM);
 637     filter_settings.SetString(group_name + ".value",
 638                               ContentSettingToString(CONTENT_SETTING_BLOCK));
 639     filter_settings.SetString(group_name + ".managedBy", "policy");
 640     web_ui()->CallJavascriptFunction(
 641         "ContentSettings.setContentFilterSettingsValue", filter_settings);
 642   }
 643
 644   media_ui_settings.SetString("askText", "mediaStreamAsk");
 645   media_ui_settings.SetString("blockText", "mediaStreamBlock");
 646   media_ui_settings.SetBoolean("showBubble", false);
 647   media_ui_settings.SetString("bubbleText", std::string());
 648
 649   web_ui()->CallJavascriptFunction("ContentSettings.updateMediaUI",
 650                                    media_ui_settings);
 651 }
 652
 653 std::string ContentSettingsHandler::GetSettingDefaultFromModel(
 654     ContentSettingsType type, std::string* provider_id) {
 655   Profile* profile = Profile::FromWebUI(web_ui());
 656   ContentSetting default_setting;
 657   default_setting =
 658       profile->GetHostContentSettingsMap()->GetDefaultContentSetting(
 659           type, provider_id);
 660
 661   return ContentSettingToString(default_setting);
 662 }
 663
 664 void ContentSettingsHandler::UpdateHandlersEnabledRadios() {
 665   base::FundamentalValue handlers_enabled(
 666       GetProtocolHandlerRegistry()->enabled());
 667
 668   web_ui()->CallJavascriptFunction(
 669       "ContentSettings.updateHandlersEnabledRadios",
 670       handlers_enabled);
 671 }
 672
 673 void ContentSettingsHandler::UpdateAllExceptionsViewsFromModel() {
 674   for (int type = CONTENT_SETTINGS_TYPE_DEFAULT + 1;
 675        type < CONTENT_SETTINGS_NUM_TYPES; ++type) {
 676     UpdateExceptionsViewFromModel(static_cast<ContentSettingsType>(type));
 677   }
 678   // Zoom levels are not actually a content type so we need to handle them
 679   // separately.
 680   UpdateZoomLevelsExceptionsView();
 681 }
 682
 683 void ContentSettingsHandler::UpdateAllOTRExceptionsViewsFromModel() {
 684   for (int type = CONTENT_SETTINGS_TYPE_DEFAULT + 1;
 685        type < CONTENT_SETTINGS_NUM_TYPES; ++type) {
 686     UpdateOTRExceptionsViewFromModel(static_cast<ContentSettingsType>(type));
 687   }
 688 }
 689
 690 void ContentSettingsHandler::UpdateExceptionsViewFromModel(
 691     ContentSettingsType type) {
 692   switch (type) {
 693     case CONTENT_SETTINGS_TYPE_GEOLOCATION:
 694       UpdateGeolocationExceptionsView();
 695       break;
 696     case CONTENT_SETTINGS_TYPE_NOTIFICATIONS:
 697       UpdateNotificationExceptionsView();
 698       break;
 699     case CONTENT_SETTINGS_TYPE_MEDIASTREAM:
 700       UpdateMediaSettingsView();
 701       break;
 702     case CONTENT_SETTINGS_TYPE_MEDIASTREAM_MIC:
 703     case CONTENT_SETTINGS_TYPE_MEDIASTREAM_CAMERA:
 704       UpdateMediaExceptionsView();
 705       break;
 706     case CONTENT_SETTINGS_TYPE_MIXEDSCRIPT:
 707       // We don't yet support exceptions for mixed scripting.
 708       break;
 709     case CONTENT_SETTINGS_TYPE_AUTO_SELECT_CERTIFICATE:
 710       // The content settings type CONTENT_SETTINGS_TYPE_AUTO_SELECT_CERTIFICATE
 711       // is supposed to be set by policy only. Hence there is no user facing UI
 712       // for this content type and we skip it here.
 713       break;
 714     case CONTENT_SETTINGS_TYPE_PROTOCOL_HANDLERS:
 715       // The RPH settings are retrieved separately.
 716       break;
 717     case CONTENT_SETTINGS_TYPE_MIDI_SYSEX:
 718       UpdateMIDISysExExceptionsView();
 719       break;
 720     case CONTENT_SETTINGS_TYPE_SSL_CERT_DECISIONS:
 721       // The content settings type CONTENT_SETTINGS_TYPE_SSL_CERT_DECISIONS is
 722       // supposed to be set by flags and field trials only, thus there is no
 723       // user facing UI for this content type and we skip it here.
 724       break;
 725 #if defined(OS_WIN)
 726     case CONTENT_SETTINGS_TYPE_METRO_SWITCH_TO_DESKTOP:
 727       break;
 728 #endif
 729     default:
 730       UpdateExceptionsViewFromHostContentSettingsMap(type);
 731       break;
 732   }
 733 }
 734
 735 void ContentSettingsHandler::UpdateOTRExceptionsViewFromModel(
 736     ContentSettingsType type) {
 737   switch (type) {
 738     case CONTENT_SETTINGS_TYPE_GEOLOCATION:
 739     case CONTENT_SETTINGS_TYPE_NOTIFICATIONS:
 740     case CONTENT_SETTINGS_TYPE_AUTO_SELECT_CERTIFICATE:
 741     case CONTENT_SETTINGS_TYPE_MIXEDSCRIPT:
 742 #if defined(OS_WIN)
 743     case CONTENT_SETTINGS_TYPE_METRO_SWITCH_TO_DESKTOP:
 744 #endif
 745     case CONTENT_SETTINGS_TYPE_MEDIASTREAM:
 746     case CONTENT_SETTINGS_TYPE_MEDIASTREAM_MIC:
 747     case CONTENT_SETTINGS_TYPE_MEDIASTREAM_CAMERA:
 748     case CONTENT_SETTINGS_TYPE_AUTOMATIC_DOWNLOADS:
 749     case CONTENT_SETTINGS_TYPE_MIDI_SYSEX:
 750     case CONTENT_SETTINGS_TYPE_SSL_CERT_DECISIONS:
 751       break;
 752     default:
 753       UpdateExceptionsViewFromOTRHostContentSettingsMap(type);
 754       break;
 755   }
 756 }
 757
 758 // TODO(estade): merge with GetExceptionsFromHostContentSettingsMap.
 759 void ContentSettingsHandler::UpdateGeolocationExceptionsView() {
 760   Profile* profile = Profile::FromWebUI(web_ui());
 761   HostContentSettingsMap* map = profile->GetHostContentSettingsMap();
 762
 763   ContentSettingsForOneType all_settings;
 764   map->GetSettingsForOneType(
 765       CONTENT_SETTINGS_TYPE_GEOLOCATION,
 766       std::string(),
 767       &all_settings);
 768
 769   // Group geolocation settings by primary_pattern.
 770   AllPatternsSettings all_patterns_settings;
 771   for (ContentSettingsForOneType::iterator i = all_settings.begin();
 772        i != all_settings.end(); ++i) {
 773     // Don't add default settings.
 774     if (i->primary_pattern == ContentSettingsPattern::Wildcard() &&
 775         i->secondary_pattern == ContentSettingsPattern::Wildcard() &&
 776         i->source != kPreferencesSource) {
 777       continue;
 778     }
 779     all_patterns_settings[std::make_pair(i->primary_pattern, i->source)]
 780         [i->secondary_pattern] = i->setting;
 781   }
 782
 783   base::ListValue exceptions;
 784   AddExceptionsGrantedByHostedApps(
 785       profile,
 786       HostedAppHasPermission<APIPermission::kGeolocation>,
 787       &exceptions);
 788
 789   for (AllPatternsSettings::iterator i = all_patterns_settings.begin();
 790        i != all_patterns_settings.end(); ++i) {
 791     const ContentSettingsPattern& primary_pattern = i->first.first;
 792     const OnePatternSettings& one_settings = i->second;
 793
 794     OnePatternSettings::const_iterator parent =
 795         one_settings.find(primary_pattern);
 796
 797     // Add the "parent" entry for the non-embedded setting.
 798     ContentSetting parent_setting =
 799         parent == one_settings.end() ? CONTENT_SETTING_DEFAULT : parent->second;
 800     exceptions.Append(GetGeolocationExceptionForPage(primary_pattern,
 801                                                      primary_pattern,
 802                                                      parent_setting));
 803
 804     // Add the "children" for any embedded settings.
 805     for (OnePatternSettings::const_iterator j = one_settings.begin();
 806          j != one_settings.end();
 807          ++j) {
 808       // Skip the non-embedded setting which we already added above.
 809       if (j == parent)
 810         continue;
 811
 812       exceptions.Append(GetGeolocationExceptionForPage(
 813           primary_pattern, j->first, j->second));
 814     }
 815   }
 816
 817   base::StringValue type_string(
 818       ContentSettingsTypeToGroupName(CONTENT_SETTINGS_TYPE_GEOLOCATION));
 819   web_ui()->CallJavascriptFunction("ContentSettings.setExceptions",
 820                                    type_string, exceptions);
 821
 822   // This is mainly here to keep this function ideologically parallel to
 823   // UpdateExceptionsViewFromHostContentSettingsMap().
 824   UpdateSettingDefaultFromModel(CONTENT_SETTINGS_TYPE_GEOLOCATION);
 825 }
 826
 827 void ContentSettingsHandler::UpdateNotificationExceptionsView() {
 828   Profile* profile = Profile::FromWebUI(web_ui());
 829   ContentSettingsForOneType settings;
 830   DesktopNotificationProfileUtil::GetNotificationsSettings(profile, &settings);
 831
 832   base::ListValue exceptions;
 833   AddExceptionsGrantedByHostedApps(
 834       profile,
 835       HostedAppHasPermission<APIPermission::kNotifications>,
 836       &exceptions);
 837
 838   for (ContentSettingsForOneType::const_iterator i =
 839            settings.begin();
 840        i != settings.end();
 841        ++i) {
 842     // Don't add default settings.
 843     if (i->primary_pattern == ContentSettingsPattern::Wildcard() &&
 844         i->secondary_pattern == ContentSettingsPattern::Wildcard() &&
 845         i->source != kPreferencesSource) {
 846       continue;
 847     }
 848
 849     exceptions.Append(
 850         GetNotificationExceptionForPage(i->primary_pattern,
 851                                         i->secondary_pattern,
 852                                         i->setting,
 853                                         i->source));
 854   }
 855
 856   base::StringValue type_string(
 857       ContentSettingsTypeToGroupName(CONTENT_SETTINGS_TYPE_NOTIFICATIONS));
 858   web_ui()->CallJavascriptFunction("ContentSettings.setExceptions",
 859                                    type_string, exceptions);
 860
 861   // This is mainly here to keep this function ideologically parallel to
 862   // UpdateExceptionsViewFromHostContentSettingsMap().
 863   UpdateSettingDefaultFromModel(CONTENT_SETTINGS_TYPE_NOTIFICATIONS);
 864 }
 865
 866 void ContentSettingsHandler::UpdateMediaExceptionsView() {
 867   base::ListValue media_exceptions;
 868   GetExceptionsFromHostContentSettingsMap(
 869       GetContentSettingsMap(),
 870       CONTENT_SETTINGS_TYPE_MEDIASTREAM_MIC,
 871       &media_exceptions);
 872
 873   base::ListValue video_exceptions;
 874   GetExceptionsFromHostContentSettingsMap(
 875       GetContentSettingsMap(),
 876       CONTENT_SETTINGS_TYPE_MEDIASTREAM_CAMERA,
 877       &video_exceptions);
 878
 879   // Merge the |video_exceptions| list to |media_exceptions| list.
 880   std::map<std::string, base::DictionaryValue*> entries_map;
 881   for (base::ListValue::const_iterator media_entry(media_exceptions.begin());
 882        media_entry != media_exceptions.end(); ++media_entry) {
 883     base::DictionaryValue* media_dict = NULL;
 884     if (!(*media_entry)->GetAsDictionary(&media_dict))
 885       NOTREACHED();
 886
 887     media_dict->SetString(kVideoSetting,
 888                           ContentSettingToString(CONTENT_SETTING_ASK));
 889
 890     std::string media_origin;
 891     media_dict->GetString(kOrigin, &media_origin);
 892     entries_map[media_origin] = media_dict;
 893   }
 894
 895   for (base::ListValue::iterator video_entry = video_exceptions.begin();
 896        video_entry != video_exceptions.end(); ++video_entry) {
 897     base::DictionaryValue* video_dict = NULL;
 898     if (!(*video_entry)->GetAsDictionary(&video_dict))
 899       NOTREACHED();
 900
 901     std::string video_origin;
 902     std::string video_setting;
 903     video_dict->GetString(kOrigin, &video_origin);
 904     video_dict->GetString(kSetting, &video_setting);
 905
 906     std::map<std::string, base::DictionaryValue*>::iterator iter =
 907         entries_map.find(video_origin);
 908     if (iter == entries_map.end()) {
 909       base::DictionaryValue* exception = new base::DictionaryValue();
 910       exception->SetString(kOrigin, video_origin);
 911       exception->SetString(kSetting,
 912                            ContentSettingToString(CONTENT_SETTING_ASK));
 913       exception->SetString(kVideoSetting, video_setting);
 914       exception->SetString(kSource, kPreferencesSource);
 915
 916       // Append the new entry to the list and map.
 917       media_exceptions.Append(exception);
 918       entries_map[video_origin] = exception;
 919     } else {
 920       // Modify the existing entry.
 921       iter->second->SetString(kVideoSetting, video_setting);
 922     }
 923   }
 924
 925   media_settings_.exceptions.clear();
 926   for (base::ListValue::const_iterator media_entry = media_exceptions.begin();
 927        media_entry != media_exceptions.end(); ++media_entry) {
 928     base::DictionaryValue* media_dict = NULL;
 929     bool result = (*media_entry)->GetAsDictionary(&media_dict);
 930     DCHECK(result);
 931
 932     std::string origin;
 933     std::string audio_setting;
 934     std::string video_setting;
 935     media_dict->GetString(kOrigin, &origin);
 936     media_dict->GetString(kSetting, &audio_setting);
 937     media_dict->GetString(kVideoSetting, &video_setting);
 938     media_settings_.exceptions.push_back(MediaException(
 939         ContentSettingsPattern::FromString(origin),
 940         ContentSettingFromString(audio_setting),
 941         ContentSettingFromString(video_setting)));
 942   }
 943   PepperFlashContentSettingsUtils::SortMediaExceptions(
 944       &media_settings_.exceptions);
 945   media_settings_.exceptions_initialized = true;
 946   UpdateFlashMediaLinksVisibility();
 947
 948   base::StringValue type_string(
 949        ContentSettingsTypeToGroupName(CONTENT_SETTINGS_TYPE_MEDIASTREAM));
 950   web_ui()->CallJavascriptFunction("ContentSettings.setExceptions",
 951                                    type_string, media_exceptions);
 952
 953   UpdateSettingDefaultFromModel(CONTENT_SETTINGS_TYPE_MEDIASTREAM);
 954 }
 955
 956 void ContentSettingsHandler::UpdateMIDISysExExceptionsView() {
 957   if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kEnableWebMIDI)) {
 958     web_ui()->CallJavascriptFunction(
 959         "ContentSettings.showExperimentalWebMIDISettings",
 960         base::FundamentalValue(true));
 961   }
 962
 963   UpdateSettingDefaultFromModel(CONTENT_SETTINGS_TYPE_MIDI_SYSEX);
 964   UpdateExceptionsViewFromHostContentSettingsMap(
 965       CONTENT_SETTINGS_TYPE_MIDI_SYSEX);
 966 }
 967
 968 void ContentSettingsHandler::UpdateZoomLevelsExceptionsView() {
 969   base::ListValue zoom_levels_exceptions;
 970
 971   content::HostZoomMap* host_zoom_map =
 972       content::HostZoomMap::GetDefaultForBrowserContext(
 973           GetBrowserContext(web_ui()));
 974   content::HostZoomMap::ZoomLevelVector zoom_levels(
 975       host_zoom_map->GetAllZoomLevels());
 976   std::sort(zoom_levels.begin(), zoom_levels.end(), HostZoomSort);
 977
 978   for (content::HostZoomMap::ZoomLevelVector::const_iterator i =
 979            zoom_levels.begin();
 980        i != zoom_levels.end();
 981        ++i) {
 982     scoped_ptr<base::DictionaryValue> exception(new base::DictionaryValue);
 983     switch (i->mode) {
 984       case content::HostZoomMap::ZOOM_CHANGED_FOR_HOST:
 985         exception->SetString(kOrigin, i->host);
 986         break;
 987       case content::HostZoomMap::ZOOM_CHANGED_FOR_SCHEME_AND_HOST:
 988         // These are not stored in preferences and get cleared on next browser
 989         // start. Therefore, we don't care for them.
 990         break;
 991       case content::HostZoomMap::ZOOM_CHANGED_TEMPORARY_ZOOM:
 992         NOTREACHED();
 993     }
 994     exception->SetString(kSetting,
 995                          ContentSettingToString(CONTENT_SETTING_DEFAULT));
 996
 997     // Calculate the zoom percent from the factor. Round up to the nearest whole
 998     // number.
 999     int zoom_percent = static_cast<int>(
1000         content::ZoomLevelToZoomFactor(i->zoom_level) * 100 + 0.5);
1001     exception->SetString(
1002         kZoom,
1003         l10n_util::GetStringFUTF16(IDS_ZOOM_PERCENT,
1004                                    base::IntToString16(zoom_percent)));
1005     exception->SetString(kSource, kPreferencesSource);
1006     // Append the new entry to the list and map.
1007     zoom_levels_exceptions.Append(exception.release());
1008   }
1009
1010   base::StringValue type_string(kZoomContentType);
1011   web_ui()->CallJavascriptFunction("ContentSettings.setExceptions",
1012                                    type_string, zoom_levels_exceptions);
1013 }
1014
1015 void ContentSettingsHandler::UpdateExceptionsViewFromHostContentSettingsMap(
1016     ContentSettingsType type) {
1017   base::ListValue exceptions;
1018   GetExceptionsFromHostContentSettingsMap(
1019       GetContentSettingsMap(), type, &exceptions);
1020   base::StringValue type_string(ContentSettingsTypeToGroupName(type));
1021   web_ui()->CallJavascriptFunction("ContentSettings.setExceptions", type_string,
1022                                    exceptions);
1023
1024   UpdateExceptionsViewFromOTRHostContentSettingsMap(type);
1025
1026   // TODO(koz): The default for fullscreen is always 'ask'.
1027   // http://crbug.com/104683
1028   if (type == CONTENT_SETTINGS_TYPE_FULLSCREEN)
1029     return;
1030
1031 #if defined(OS_CHROMEOS)
1032   // Also the default for protected contents is managed in another place.
1033   if (type == CONTENT_SETTINGS_TYPE_PROTECTED_MEDIA_IDENTIFIER)
1034     return;
1035 #endif
1036
1037   // The default may also have changed (we won't get a separate notification).
1038   // If it hasn't changed, this call will be harmless.
1039   UpdateSettingDefaultFromModel(type);
1040 }
1041
1042 void ContentSettingsHandler::UpdateExceptionsViewFromOTRHostContentSettingsMap(
1043     ContentSettingsType type) {
1044   const HostContentSettingsMap* otr_settings_map = GetOTRContentSettingsMap();
1045   if (!otr_settings_map)
1046     return;
1047   base::ListValue exceptions;
1048   GetExceptionsFromHostContentSettingsMap(otr_settings_map, type, &exceptions);
1049   base::StringValue type_string(ContentSettingsTypeToGroupName(type));
1050   web_ui()->CallJavascriptFunction("ContentSettings.setOTRExceptions",
1051                                    type_string, exceptions);
1052 }
1053
1054 void ContentSettingsHandler::GetExceptionsFromHostContentSettingsMap(
1055     const HostContentSettingsMap* map,
1056     ContentSettingsType type,
1057     base::ListValue* exceptions) {
1058   ContentSettingsForOneType entries;
1059   map->GetSettingsForOneType(type, std::string(), &entries);
1060   // Group settings by primary_pattern.
1061   AllPatternsSettings all_patterns_settings;
1062   for (ContentSettingsForOneType::iterator i = entries.begin();
1063        i != entries.end(); ++i) {
1064     // Don't add default settings.
1065     if (i->primary_pattern == ContentSettingsPattern::Wildcard() &&
1066         i->secondary_pattern == ContentSettingsPattern::Wildcard() &&
1067         i->source != kPreferencesSource) {
1068       continue;
1069     }
1070
1071     // Off-the-record HostContentSettingsMap contains incognito content settings
1072     // as well as normal content settings. Here, we use the incongnito settings
1073     // only.
1074     if (map->is_off_the_record() && !i->incognito)
1075       continue;
1076
1077     all_patterns_settings[std::make_pair(i->primary_pattern, i->source)]
1078         [i->secondary_pattern] = i->setting;
1079   }
1080
1081   // Keep the exceptions sorted by provider so they will be displayed in
1082   // precedence order.
1083   std::vector<std::vector<base::Value*> > all_provider_exceptions;
1084   all_provider_exceptions.resize(HostContentSettingsMap::NUM_PROVIDER_TYPES);
1085
1086   for (AllPatternsSettings::iterator i = all_patterns_settings.begin();
1087        i != all_patterns_settings.end();
1088        ++i) {
1089     const ContentSettingsPattern& primary_pattern = i->first.first;
1090     const OnePatternSettings& one_settings = i->second;
1091
1092     // The "parent" entry either has an identical primary and secondary pattern,
1093     // or has a wildcard secondary. The two cases are indistinguishable in the
1094     // UI.
1095     OnePatternSettings::const_iterator parent =
1096         one_settings.find(primary_pattern);
1097     if (parent == one_settings.end())
1098       parent = one_settings.find(ContentSettingsPattern::Wildcard());
1099
1100     const std::string& source = i->first.second;
1101     std::vector<base::Value*>* this_provider_exceptions =
1102         &all_provider_exceptions.at(
1103             HostContentSettingsMap::GetProviderTypeFromSource(source));
1104
1105     // Add the "parent" entry for the non-embedded setting.
1106     ContentSetting parent_setting =
1107         parent == one_settings.end() ? CONTENT_SETTING_DEFAULT : parent->second;
1108     const ContentSettingsPattern& secondary_pattern =
1109         parent == one_settings.end() ? primary_pattern : parent->first;
1110     this_provider_exceptions->push_back(GetExceptionForPage(primary_pattern,
1111                                                             secondary_pattern,
1112                                                             parent_setting,
1113                                                             source));
1114
1115     // Add the "children" for any embedded settings.
1116     for (OnePatternSettings::const_iterator j = one_settings.begin();
1117          j != one_settings.end(); ++j) {
1118       // Skip the non-embedded setting which we already added above.
1119       if (j == parent)
1120         continue;
1121
1122       ContentSetting content_setting = j->second;
1123       this_provider_exceptions->push_back(GetExceptionForPage(
1124           primary_pattern,
1125           j->first,
1126           content_setting,
1127           source));
1128     }
1129   }
1130
1131   for (size_t i = 0; i < all_provider_exceptions.size(); ++i) {
1132     for (size_t j = 0; j < all_provider_exceptions[i].size(); ++j) {
1133       exceptions->Append(all_provider_exceptions[i][j]);
1134     }
1135   }
1136 }
1137
1138 void ContentSettingsHandler::RemoveMediaException(const base::ListValue* args) {
1139   std::string mode;
1140   bool rv = args->GetString(1, &mode);
1141   DCHECK(rv);
1142
1143   std::string pattern;
1144   rv = args->GetString(2, &pattern);
1145   DCHECK(rv);
1146
1147   HostContentSettingsMap* settings_map =
1148       mode == "normal" ? GetContentSettingsMap() :
1149                          GetOTRContentSettingsMap();
1150   if (settings_map) {
1151     settings_map->SetWebsiteSetting(ContentSettingsPattern::FromString(pattern),
1152                                     ContentSettingsPattern::Wildcard(),
1153                                     CONTENT_SETTINGS_TYPE_MEDIASTREAM_MIC,
1154                                     std::string(),
1155                                     NULL);
1156     settings_map->SetWebsiteSetting(ContentSettingsPattern::FromString(pattern),
1157                                     ContentSettingsPattern::Wildcard(),
1158                                     CONTENT_SETTINGS_TYPE_MEDIASTREAM_CAMERA,
1159                                     std::string(),
1160                                     NULL);
1161   }
1162 }
1163
1164 void ContentSettingsHandler::RemoveExceptionFromHostContentSettingsMap(
1165     const base::ListValue* args,
1166     ContentSettingsType type) {
1167   std::string mode;
1168   bool rv = args->GetString(1, &mode);
1169   DCHECK(rv);
1170
1171   std::string pattern;
1172   rv = args->GetString(2, &pattern);
1173   DCHECK(rv);
1174
1175   // The fourth argument to this handler is optional.
1176   std::string secondary_pattern;
1177   if (args->GetSize() >= 4U) {
1178     rv = args->GetString(3, &secondary_pattern);
1179     DCHECK(rv);
1180   }
1181
1182   HostContentSettingsMap* settings_map =
1183       mode == "normal" ? GetContentSettingsMap() :
1184                          GetOTRContentSettingsMap();
1185   if (settings_map) {
1186     settings_map->SetWebsiteSetting(
1187         ContentSettingsPattern::FromString(pattern),
1188         secondary_pattern.empty() ?
1189             ContentSettingsPattern::Wildcard() :
1190             ContentSettingsPattern::FromString(secondary_pattern),
1191         type,
1192         std::string(),
1193         NULL);
1194   }
1195 }
1196
1197 void ContentSettingsHandler::RemoveZoomLevelException(
1198     const base::ListValue* args) {
1199   std::string mode;
1200   bool rv = args->GetString(1, &mode);
1201   DCHECK(rv);
1202
1203   std::string pattern;
1204   rv = args->GetString(2, &pattern);
1205   DCHECK(rv);
1206
1207   content::HostZoomMap* host_zoom_map =
1208       content::HostZoomMap::GetDefaultForBrowserContext(
1209           GetBrowserContext(web_ui()));
1210   double default_level = host_zoom_map->GetDefaultZoomLevel();
1211   host_zoom_map->SetZoomLevelForHost(pattern, default_level);
1212 }
1213
1214 void ContentSettingsHandler::RegisterMessages() {
1215   web_ui()->RegisterMessageCallback("setContentFilter",
1216       base::Bind(&ContentSettingsHandler::SetContentFilter,
1217                  base::Unretained(this)));
1218   web_ui()->RegisterMessageCallback("removeException",
1219       base::Bind(&ContentSettingsHandler::RemoveException,
1220                  base::Unretained(this)));
1221   web_ui()->RegisterMessageCallback("setException",
1222       base::Bind(&ContentSettingsHandler::SetException,
1223                  base::Unretained(this)));
1224   web_ui()->RegisterMessageCallback("checkExceptionPatternValidity",
1225       base::Bind(&ContentSettingsHandler::CheckExceptionPatternValidity,
1226                  base::Unretained(this)));
1227 }
1228
1229 void ContentSettingsHandler::SetContentFilter(const base::ListValue* args) {
1230   DCHECK_EQ(2U, args->GetSize());
1231   std::string group, setting;
1232   if (!(args->GetString(0, &group) &&
1233         args->GetString(1, &setting))) {
1234     NOTREACHED();
1235     return;
1236   }
1237
1238   ContentSetting default_setting = ContentSettingFromString(setting);
1239   ContentSettingsType content_type = ContentSettingsTypeFromGroupName(group);
1240   Profile* profile = Profile::FromWebUI(web_ui());
1241
1242 #if defined(OS_CHROMEOS)
1243   // ChromeOS special case : in Guest mode settings are opened in Incognito
1244   // mode, so we need original profile to actually modify settings.
1245   if (user_manager::UserManager::Get()->IsLoggedInAsGuest())
1246     profile = profile->GetOriginalProfile();
1247 #endif
1248
1249
1250   HostContentSettingsMap* map = profile->GetHostContentSettingsMap();
1251   map->SetDefaultContentSetting(content_type, default_setting);
1252
1253   switch (content_type) {
1254     case CONTENT_SETTINGS_TYPE_COOKIES:
1255       content::RecordAction(
1256           UserMetricsAction("Options_DefaultCookieSettingChanged"));
1257       break;
1258     case CONTENT_SETTINGS_TYPE_IMAGES:
1259       content::RecordAction(
1260           UserMetricsAction("Options_DefaultImagesSettingChanged"));
1261       break;
1262     case CONTENT_SETTINGS_TYPE_JAVASCRIPT:
1263       content::RecordAction(
1264           UserMetricsAction("Options_DefaultJavaScriptSettingChanged"));
1265       break;
1266     case CONTENT_SETTINGS_TYPE_PLUGINS:
1267       content::RecordAction(
1268           UserMetricsAction("Options_DefaultPluginsSettingChanged"));
1269       break;
1270     case CONTENT_SETTINGS_TYPE_POPUPS:
1271       content::RecordAction(
1272           UserMetricsAction("Options_DefaultPopupsSettingChanged"));
1273       break;
1274     case CONTENT_SETTINGS_TYPE_NOTIFICATIONS:
1275       content::RecordAction(
1276           UserMetricsAction("Options_DefaultNotificationsSettingChanged"));
1277       break;
1278     case CONTENT_SETTINGS_TYPE_GEOLOCATION:
1279       content::RecordAction(
1280           UserMetricsAction("Options_DefaultGeolocationSettingChanged"));
1281       break;
1282     case CONTENT_SETTINGS_TYPE_MOUSELOCK:
1283       content::RecordAction(
1284           UserMetricsAction("Options_DefaultMouseLockSettingChanged"));
1285       break;
1286     case CONTENT_SETTINGS_TYPE_MEDIASTREAM:
1287       content::RecordAction(
1288           UserMetricsAction("Options_DefaultMediaStreamMicSettingChanged"));
1289       break;
1290     case CONTENT_SETTINGS_TYPE_AUTOMATIC_DOWNLOADS:
1291       content::RecordAction(
1292           UserMetricsAction("Options_DefaultMultipleAutomaticDLSettingChange"));
1293       break;
1294     case CONTENT_SETTINGS_TYPE_MIDI_SYSEX:
1295       content::RecordAction(
1296           UserMetricsAction("Options_DefaultMIDISysExSettingChanged"));
1297       break;
1298     case CONTENT_SETTINGS_TYPE_PUSH_MESSAGING:
1299       content::RecordAction(
1300           UserMetricsAction("Options_DefaultPushMessagingSettingChanged"));
1301       break;
1302     default:
1303       break;
1304   }
1305 }
1306
1307 void ContentSettingsHandler::RemoveException(const base::ListValue* args) {
1308   std::string type_string;
1309   CHECK(args->GetString(0, &type_string));
1310
1311   // Zoom levels are no actual content type so we need to handle them
1312   // separately. They would not be recognized by
1313   // ContentSettingsTypeFromGroupName.
1314   if (type_string == kZoomContentType) {
1315     RemoveZoomLevelException(args);
1316     return;
1317   }
1318
1319   ContentSettingsType type = ContentSettingsTypeFromGroupName(type_string);
1320   if (type == CONTENT_SETTINGS_TYPE_MEDIASTREAM)
1321     RemoveMediaException(args);
1322   else
1323     RemoveExceptionFromHostContentSettingsMap(args, type);
1324 }
1325
1326 void ContentSettingsHandler::SetException(const base::ListValue* args) {
1327   std::string type_string;
1328   CHECK(args->GetString(0, &type_string));
1329   std::string mode;
1330   CHECK(args->GetString(1, &mode));
1331   std::string pattern;
1332   CHECK(args->GetString(2, &pattern));
1333   std::string setting;
1334   CHECK(args->GetString(3, &setting));
1335
1336   ContentSettingsType type = ContentSettingsTypeFromGroupName(type_string);
1337   if (type == CONTENT_SETTINGS_TYPE_GEOLOCATION ||
1338       type == CONTENT_SETTINGS_TYPE_NOTIFICATIONS ||
1339       type == CONTENT_SETTINGS_TYPE_MEDIASTREAM ||
1340       type == CONTENT_SETTINGS_TYPE_MEDIASTREAM_MIC ||
1341       type == CONTENT_SETTINGS_TYPE_MEDIASTREAM_CAMERA) {
1342     NOTREACHED();
1343   } else {
1344     HostContentSettingsMap* settings_map =
1345         mode == "normal" ? GetContentSettingsMap() :
1346                            GetOTRContentSettingsMap();
1347
1348     // The settings map could be null if the mode was OTR but the OTR profile
1349     // got destroyed before we received this message.
1350     if (!settings_map)
1351       return;
1352     settings_map->SetContentSetting(ContentSettingsPattern::FromString(pattern),
1353                                     ContentSettingsPattern::Wildcard(),
1354                                     type,
1355                                     std::string(),
1356                                     ContentSettingFromString(setting));
1357   }
1358 }
1359
1360 void ContentSettingsHandler::CheckExceptionPatternValidity(
1361     const base::ListValue* args) {
1362   std::string type_string;
1363   CHECK(args->GetString(0, &type_string));
1364   std::string mode_string;
1365   CHECK(args->GetString(1, &mode_string));
1366   std::string pattern_string;
1367   CHECK(args->GetString(2, &pattern_string));
1368
1369   ContentSettingsPattern pattern =
1370       ContentSettingsPattern::FromString(pattern_string);
1371
1372   web_ui()->CallJavascriptFunction(
1373       "ContentSettings.patternValidityCheckComplete",
1374       base::StringValue(type_string),
1375       base::StringValue(mode_string),
1376       base::StringValue(pattern_string),
1377       base::FundamentalValue(pattern.IsValid()));
1378 }
1379
1380 // static
1381 std::string ContentSettingsHandler::ContentSettingsTypeToGroupName(
1382     ContentSettingsType type) {
1383   for (size_t i = 0; i < arraysize(kContentSettingsTypeGroupNames); ++i) {
1384     if (type == kContentSettingsTypeGroupNames[i].type)
1385       return kContentSettingsTypeGroupNames[i].name;
1386   }
1387
1388   NOTREACHED();
1389   return std::string();
1390 }
1391
1392 HostContentSettingsMap* ContentSettingsHandler::GetContentSettingsMap() {
1393   return Profile::FromWebUI(web_ui())->GetHostContentSettingsMap();
1394 }
1395
1396 ProtocolHandlerRegistry* ContentSettingsHandler::GetProtocolHandlerRegistry() {
1397   return ProtocolHandlerRegistryFactory::GetForBrowserContext(
1398       GetBrowserContext(web_ui()));
1399 }
1400
1401 HostContentSettingsMap*
1402     ContentSettingsHandler::GetOTRContentSettingsMap() {
1403   Profile* profile = Profile::FromWebUI(web_ui());
1404   if (profile->HasOffTheRecordProfile())
1405     return profile->GetOffTheRecordProfile()->GetHostContentSettingsMap();
1406   return NULL;
1407 }
1408
1409 void ContentSettingsHandler::RefreshFlashMediaSettings() {
1410   media_settings_.flash_settings_initialized = false;
1411
1412   media_settings_.last_flash_refresh_request_id =
1413       flash_settings_manager_->GetPermissionSettings(
1414           PP_FLASH_BROWSEROPERATIONS_SETTINGTYPE_CAMERAMIC);
1415 }
1416
1417 void ContentSettingsHandler::OnPepperFlashPrefChanged() {
1418   ShowFlashMediaLink(DEFAULT_SETTING, false);
1419   ShowFlashMediaLink(EXCEPTIONS, false);
1420
1421   PrefService* prefs = user_prefs::UserPrefs::Get(GetBrowserContext(web_ui()));
1422   if (prefs->GetBoolean(prefs::kPepperFlashSettingsEnabled))
1423     RefreshFlashMediaSettings();
1424   else
1425     media_settings_.flash_settings_initialized = false;
1426 }
1427
1428 void ContentSettingsHandler::OnZoomLevelChanged(
1429     const content::HostZoomMap::ZoomLevelChange& change) {
1430   UpdateZoomLevelsExceptionsView();
1431 }
1432
1433 void ContentSettingsHandler::ShowFlashMediaLink(LinkType link_type, bool show) {
1434   bool& show_link = link_type == DEFAULT_SETTING ?
1435       media_settings_.show_flash_default_link :
1436       media_settings_.show_flash_exceptions_link;
1437   if (show_link != show) {
1438     web_ui()->CallJavascriptFunction(
1439         link_type == DEFAULT_SETTING ?
1440             "ContentSettings.showMediaPepperFlashDefaultLink" :
1441             "ContentSettings.showMediaPepperFlashExceptionsLink",
1442         base::FundamentalValue(show));
1443     show_link = show;
1444   }
1445 }
1446
1447 void ContentSettingsHandler::UpdateFlashMediaLinksVisibility() {
1448   if (!media_settings_.flash_settings_initialized ||
1449       !media_settings_.default_setting_initialized ||
1450       !media_settings_.exceptions_initialized) {
1451     return;
1452   }
1453
1454   // Flash won't send us notifications when its settings get changed, which
1455   // means the Flash settings in |media_settings_| may be out-dated, especially
1456   // after we show links to change Flash settings.
1457   // In order to avoid confusion, we won't hide the links once they are showed.
1458   // One exception is that we will hide them when Pepper Flash is disabled
1459   // (handled in OnPepperFlashPrefChanged()).
1460   if (media_settings_.show_flash_default_link &&
1461       media_settings_.show_flash_exceptions_link) {
1462     return;
1463   }
1464
1465   if (!media_settings_.show_flash_default_link) {
1466     // If both audio and video capture are disabled by policy, the link
1467     // shouldn't be showed. Flash conforms to the policy in this case because
1468     // it cannot open those devices. We don't have to look at the Flash
1469     // settings.
1470     if (!(media_settings_.policy_disable_audio &&
1471           media_settings_.policy_disable_video) &&
1472         media_settings_.flash_default_setting !=
1473             media_settings_.default_setting) {
1474       ShowFlashMediaLink(DEFAULT_SETTING, true);
1475     }
1476   }
1477   if (!media_settings_.show_flash_exceptions_link) {
1478     // If audio or video capture is disabled by policy, we skip comparison of
1479     // exceptions for audio or video capture, respectively.
1480     if (!PepperFlashContentSettingsUtils::AreMediaExceptionsEqual(
1481             media_settings_.default_setting,
1482             media_settings_.exceptions,
1483             media_settings_.flash_default_setting,
1484             media_settings_.flash_exceptions,
1485             media_settings_.policy_disable_audio,
1486             media_settings_.policy_disable_video)) {
1487       ShowFlashMediaLink(EXCEPTIONS, true);
1488     }
1489   }
1490 }
1491
1492 void ContentSettingsHandler::UpdateProtectedContentExceptionsButton() {
1493 #if defined(OS_CHROMEOS)
1494   // Guests cannot modify exceptions. UIAccountTweaks will disabled the button.
1495   if (user_manager::UserManager::Get()->IsLoggedInAsGuest())
1496     return;
1497 #endif
1498
1499   // Exceptions apply only when the feature is enabled.
1500   PrefService* prefs = user_prefs::UserPrefs::Get(GetBrowserContext(web_ui()));
1501   bool enable_exceptions = prefs->GetBoolean(prefs::kEnableDRM);
1502   web_ui()->CallJavascriptFunction(
1503       "ContentSettings.enableProtectedContentExceptions",
1504       base::FundamentalValue(enable_exceptions));
1505 }
1506
1507 }  // namespace options