Revert of DirectCompositorFrameSink Uses CompositorFrameSinkSupport

components/display_compositor/gpu_display_compositor_frame_sink.h

Index: components/display_compositor/gpu_display_compositor_frame_sink.h
diff --git a/components/display_compositor/gpu_display_compositor_frame_sink.h b/components/display_compositor/gpu_display_compositor_frame_sink.h
index ac3ad8b568ead81f3c93632b05a23cdc8963a465..588ef754612b7d05ac9ef1cc9d1c5c452e2d7d3a 100644
--- a/components/display_compositor/gpu_display_compositor_frame_sink.h
+++ b/components/display_compositor/gpu_display_compositor_frame_sink.h
@@ -38,12 +38,6 @@
   mojo::AssociatedBinding<cc::mojom::MojoCompositorFrameSink> binding_;
   mojo::AssociatedBinding<cc::mojom::DisplayPrivate> display_private_binding_;
 
-  // GpuCompositorFrameSink holds a Display and its BeginFrameSource. In the
-  // window server, the display root window's CompositorFrameSink will have a
-  // valid gpu::SurfaceHandle.
-  std::unique_ptr<cc::BeginFrameSource> display_begin_frame_source_;
-  std::unique_ptr<cc::Display> display_;
-
   DISALLOW_COPY_AND_ASSIGN(GpuDisplayCompositorFrameSink);
 };