Bug 987010 - Ignore alpha in Skia BGRX source surfaces r=gwright
Bug 981621 - Don't crash if we fail to create SkiaGL backing texture r=gwright
Bug 985487 - Don't try to use GL_TEXTURE_RECTANGLE_ARB on ES2 r=mwoodrow
Bug 985773 - Destroy SkiaGLGlue in gfxPlatform::Shutdown() instead of relying on destructor r=gwright