Return resources immediately after a Surface is destroyed

components/viz/frame_sinks/mojo_frame_sink_manager.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/viz/frame_sinks/mojo_frame_sink_manager.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/memory/ptr_util.h"
@@ skipping 111 matching lines @@
   // be necessary, because a surface reference might already exist and no
   // temporary reference was created. It could be useful to let |client_| know
   // if it should find an owner.
   if (client_)
     client_->OnSurfaceCreated(surface_info);
 }
 
 void MojoFrameSinkManager::OnSurfaceDamaged(const cc::SurfaceId& surface_id,
                                             bool* changed) {}
 
+void MojoFrameSinkManager::OnSurfaceDiscarded(const cc::SurfaceId& surface_id) {
+}
+
 void MojoFrameSinkManager::OnClientConnectionLost(
     const cc::FrameSinkId& frame_sink_id,
     bool destroy_compositor_frame_sink) {
   DCHECK(thread_checker_.CalledOnValidThread());
   if (destroy_compositor_frame_sink)
     DestroyCompositorFrameSink(frame_sink_id);
   // TODO(fsamuel): Tell the frame sink manager host that the client connection
   // has been lost so that it can drop its private connection and allow a new
   // client instance to create a new CompositorFrameSink.
 }
 
 void MojoFrameSinkManager::OnPrivateConnectionLost(
     const cc::FrameSinkId& frame_sink_id,
     bool destroy_compositor_frame_sink) {
   DCHECK(thread_checker_.CalledOnValidThread());
   if (destroy_compositor_frame_sink)
     DestroyCompositorFrameSink(frame_sink_id);
 }
 
 }  // namespace viz