Bug 990338 - Use Moz2D for updating CanvasClient. r=nical
Bug 990338 - Clean up CopyableCanvasLayer. r=nical
Bug 990338 - Remove FillWithMask since it's dead code. r=nical
Bug 990338 - Pass CanvasLayer Y-flip flag through layers. r=nical
Bug 990338 - Use CopySurface when copying data to a TextureClient for better performance. r=nical