Bug 952977: Perform some cleanup r=nical
Bug 952977: Convert OGLShaderProgram to gfx::Matrix r=nical
Bug 952977: Convert PrepareViewport to gfx::Matrix4x4 r=nical
Bug 952977: Convert DrawTo to gfx::Matrix4x4 r=nical
Bug 952977: Convert CompositingRenderTargetOGL to gfx::Matrix4x4 r=nical
Bug 952977: Convert AutoMaskData to gfx::Matrix4x4 r=nical
Bug 952977: Convert AsyncCompositionManager to gfx::Matrix4x4 r=nical