Bug 871462 - Clean up string API usages on Gonk. r=dbaron, a=akeybl
Bug 779395 - Add support for skew transforms to compositor-driven animations. r=dbaron, a=akeybl
Bug 877461. Make nsMediaCache aggressively cache data just behind the current playback position. r=cpearce,a=leo+

--HG--
extra : rebase_source : 4ac48a9d7e105bf98963a0ea9ebc422618b30ea3