Support text track selection in video controls

content/child/blink_platform_impl.cc

Index: content/child/blink_platform_impl.cc
diff --git a/content/child/blink_platform_impl.cc b/content/child/blink_platform_impl.cc
index 8a58c91e89651bb4d01648951fecbf7cc0206996..749ed18bbac3a4a4c378384f0ba2246452d0c93e 100644
--- a/content/child/blink_platform_impl.cc
+++ b/content/child/blink_platform_impl.cc
@@ -405,6 +405,14 @@ static int ToMessageID(WebLocalizedString::Name name) {
       return IDS_FORM_INPUT_WEEK_TEMPLATE;
     case WebLocalizedString::WeekNumberLabel:
       return IDS_FORM_WEEK_NUMBER_LABEL;
+    case WebLocalizedString::TextTracksNoLabel:
+      return IDS_MEDIA_TRACKS_NO_LABEL;
+    case WebLocalizedString::TextTracksOff:
+      return IDS_MEDIA_TRACKS_OFF;
+    case WebLocalizedString::TextTracksSubtitles:
+      return IDS_MEDIA_TRACKS_SUBTITLES;
+    case WebLocalizedString::TextTracksCaptionsMarker:
+      return IDS_MEDIA_TRACKS_CAPTIONS_MARKER;
     // This "default:" line exists to avoid compile warnings about enum
     // coverage when we add a new symbol to WebLocalizedString.h in WebKit.
     // After a planned WebKit patch is landed, we need to add a case statement
@@ -868,6 +876,9 @@ const DataResource kDataResources[] = {
     {"mediaplayerOverlayPlay",
      IDR_MEDIAPLAYER_OVERLAY_PLAY_BUTTON,
      ui::SCALE_FACTOR_100P},
+    {"mediaplayerTrackSelectionCheckmark",

[philipj_slow, 2015/04/23 13:53:37]

Is there a bitmap to go with this too?

[philipj_slow, 2015/04/23 14:02:45]

Oh, it's in https://codereview.chromium.org/1082533002/

Looks like these recently moved to Blink. It's a bit unfortunate that any
Chromium-side changes are needed for something that looks to be entirely
Blink-internal, but oh well.

+     IDR_MEDIAPLAYER_TRACKSELECTION_CHECKMARK,
+     ui::SCALE_FACTOR_100P},
     {"panIcon", IDR_PAN_SCROLL_ICON, ui::SCALE_FACTOR_100P},
     {"searchCancel", IDR_SEARCH_CANCEL, ui::SCALE_FACTOR_100P},
     {"searchCancelPressed", IDR_SEARCH_CANCEL_PRESSED, ui::SCALE_FACTOR_100P},