Bug 832383 - Add support for complex visible regions to HwcComposer2D. r=mwu
Bug 832383 - Ensure color fill rect stays inside screen bounds. r=mwu
Bug 832383 - Don't render semitransparent color layers in HwcComposer2D. r=mwu

The hardware composer does not support them.

Also don't skip rendering fully transparent layers. The GPU compositor
does not seem to ignore them completely.
Bug 832383 - Get surface dimensions from SurfaceDecriptorGralloc. r=bjacob

The dimensions in the android::GraphicBuffer are not always correct.
Bug 861689 - Fix focus issues in various B2G mochitests. r=jmaher
Bug 863417 - Create a pref for setting the persona uri to facilitate testing. r=benadida, r=lloyd
Bug 864180 - Move audio software decoder to app's process. r=doublec