Add options for audio/video autoplay to chrome://settings/content.

chrome/browser/ui/webui/options/content_settings_handler.cc

Index: chrome/browser/ui/webui/options/content_settings_handler.cc
diff --git a/chrome/browser/ui/webui/options/content_settings_handler.cc b/chrome/browser/ui/webui/options/content_settings_handler.cc
index 94be249358a55bb2804c71cc163bfb198bca207a..2d3588d38dbf6999bd39c2fe0b75f9b6216efea9 100644
--- a/chrome/browser/ui/webui/options/content_settings_handler.cc
+++ b/chrome/browser/ui/webui/options/content_settings_handler.cc
@@ -97,6 +97,7 @@ const ContentSettingWithExceptions kContentTypesWithExceptions[] = {
     {CONTENT_SETTINGS_TYPE_MEDIASTREAM_MIC, false},
     {CONTENT_SETTINGS_TYPE_MEDIASTREAM_CAMERA, false},
     {CONTENT_SETTINGS_TYPE_MIDI_SYSEX, false},
+    {CONTENT_SETTINGS_TYPE_MEDIA_AUTOPLAY, false},
 };
 
 struct ContentSettingsTypeNameEntry {
@@ -150,6 +151,7 @@ const ContentSettingsTypeNameEntry kContentSettingsTypeGroupNames[] = {
   {CONTENT_SETTINGS_TYPE_MIDI_SYSEX, "midi-sysex"},
   {CONTENT_SETTINGS_TYPE_PUSH_MESSAGING, "push-messaging"},
   {CONTENT_SETTINGS_TYPE_SSL_CERT_DECISIONS, "ssl-cert-decisions"},
+  {CONTENT_SETTINGS_TYPE_MEDIA_AUTOPLAY, "media-autoplay"},
 #if defined(OS_CHROMEOS)
   {CONTENT_SETTINGS_TYPE_PROTECTED_MEDIA_IDENTIFIER, "protectedContent"},
 #endif
@@ -477,6 +479,11 @@ void ContentSettingsHandler::GetLocalizedValues(
     {"pushMessagingBlock", IDS_PUSH_MESSSAGING_BLOCK_RADIO},
     {"zoomlevelsHeader", IDS_ZOOMLEVELS_HEADER_AND_TAB_LABEL},
     {"zoomLevelsManage", IDS_ZOOMLEVELS_MANAGE_BUTTON},
+    {"mediaAutoplayHeader", IDS_MEDIA_AUTOPLAY_TAB_LABEL},
+    {"mediaAutoplayAllow", IDS_MEDIA_AUTOPLAY_ALLOW_RADIO},
+    {"mediaAutoplayDetectImportantContent",
+     IDS_MEDIA_AUTOPLAY_DETECT_RECOMMENDED_RADIO},
+    {"mediaAutoplayBlock", IDS_MEDIA_AUTOPLAY_BLOCK_RADIO},
   };
 
   RegisterStrings(localized_strings, resources, arraysize(resources));
@@ -536,6 +543,8 @@ void ContentSettingsHandler::GetLocalizedValues(
                 IDS_MIDI_SYSEX_TAB_LABEL);
   RegisterTitle(localized_strings, "zoomlevels",
                 IDS_ZOOMLEVELS_HEADER_AND_TAB_LABEL);
+  RegisterTitle(localized_strings, "media-autoplay",
+                IDS_MEDIA_AUTOPLAY_TAB_LABEL);
 
   localized_strings->SetString("exceptionsLearnMoreUrl",
                                kExceptionsLearnMoreUrl);
@@ -1430,6 +1439,10 @@ void ContentSettingsHandler::SetContentFilter(const base::ListValue* args) {
       content::RecordAction(
           UserMetricsAction("Options_DefaultPushMessagingSettingChanged"));
       break;
+    case CONTENT_SETTINGS_TYPE_MEDIA_AUTOPLAY:
+      content::RecordAction(
+          UserMetricsAction("Options_DefaultMediaAutoplaySettingChanged"));
+      break;
     default:
       break;
   }