Give ServerWindowCompositorFrameSinkManager ownership of GpuCompositorFrameSink

services/ui/ws/gpu_compositor_frame_sink.h

Index: services/ui/ws/gpu_compositor_frame_sink.h
diff --git a/services/ui/ws/gpu_compositor_frame_sink.h b/services/ui/ws/gpu_compositor_frame_sink.h
index 65a7b82d952777b4bcfa93f4f61efdb4bf78b31b..18fdb0804b61e25ea7ac75dd25b64dbab46a37f5 100644
--- a/services/ui/ws/gpu_compositor_frame_sink.h
+++ b/services/ui/ws/gpu_compositor_frame_sink.h
@@ -55,6 +55,7 @@ class GpuCompositorFrameSink : public cc::mojom::MojoCompositorFrameSink,
       gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager,
       scoped_refptr<SurfacesContextProvider> context_provider,
       cc::mojom::MojoCompositorFrameSinkRequest request,
+      cc::mojom::MojoCompositorFrameSinkPrivateRequest private_request,
       cc::mojom::MojoCompositorFrameSinkClientPtr client);
 
   ~GpuCompositorFrameSink() override;
@@ -128,6 +129,7 @@ class GpuCompositorFrameSink : public cc::mojom::MojoCompositorFrameSink,
 
   cc::mojom::MojoCompositorFrameSinkClientPtr client_;
   mojo::Binding<cc::mojom::MojoCompositorFrameSink> binding_;
+  mojo::Binding<cc::mojom::MojoCompositorFrameSinkPrivate> private_binding_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuCompositorFrameSink);
 };