Bug 1019727 - Remove TextureImageCGL::GetSurfaceForUpdate(). r=bjacob
Bug 1019704 - Stop creating Thebes backed gfxContexts in the old gtests. r=mattwoodrow
Bug 1019753, part 1 - Add a ClearDataSourceSurface() helper to DataSurfaceHelpers. r=Bas
Bug 1019753, part 2 - Use Moz2D DataSourceSurfaces instead of Thebes gfxImageSurfaces in DocumentRendererParent.cpp and ImageEncoder.cpp. r=mattwoodrow