Revision 62880 made TimeRanges EnabledAtRuntime. This requires a corresponding function, RuntimeEnabledFeatures::timeRangesEnabled(), to be added.
Created attachment 61006 [details] Add in timeRangesEnable()
Comment on attachment 61006 [details] Add in timeRangesEnable() LGTM, r=me.We were both not 100% sure whether timeRangesEnabled() should be 1:1 coupled with the MediaPlayer availability. But as TimeRanges is conditional=video, and it's also exposed only if VIDEO is enabled, it seems fine.
Committed as r62920.