Bug 980415 - Fix multiple points in the codebase where we fail to call DataSourceSurface::Unmap(). r=Bas
Bug 980428 - Add a DEBUG-only DataSourceSurface dtor to assert that the surface has not been left mapped. r=Bas
Bug 980603 - Move the implementation of SurfaceToPackedBGRA and ConvertBGRXToBGRA to a source file (un-inline them). r=gal
Bug 980885 - Fix more Moz2D D2D mapping code that fails to set/reset mIsMapped. r=Bas