MojoCompositorFrameSinkPrivate should support copy requests

components/display_compositor/gpu_compositor_frame_sink.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/display_compositor/gpu_compositor_frame_sink.h"
 
 #include "cc/surfaces/surface_reference.h"
 
 namespace display_compositor {
 
@@ skipping 132 matching lines @@
                                     private_connection_lost_);
 }
 
 void GpuCompositorFrameSink::OnPrivateConnectionLost() {
   private_connection_lost_ = true;
   // Request destruction of |this| only if both connections are lost.
   delegate_->OnPrivateConnectionLost(support_.frame_sink_id(),
                                      client_connection_lost_);
 }
 
+void GpuCompositorFrameSink::RequestCopyOfSurface(
+    std::unique_ptr<cc::CopyOutputRequest> request,
+    const RequestCopyOfSurfaceCallback& callback) {
+  request->set_result_callback(callback);
+  support_.RequestCopyOfSurface(std::move(request));
+}
+
+void GpuCompositorFrameSink::ReleaseCopyOfSurface(
+    const gpu::Mailbox& mailbox,
+    const ::gpu::SyncToken& sync_token,
+    bool is_lost) {
+  support_.ReleaseCopyOfSurface(mailbox, sync_token, is_lost);
+}
+
 }  // namespace display_compositor