cc: Dedup IPCs to return resources to client

services/ui/public/cpp/lib/output_surface.cc

 // Copyright 2014 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 "services/ui/public/cpp/output_surface.h"
 
 #include "base/bind.h"
 #include "cc/output/compositor_frame.h"
-#include "cc/output/compositor_frame_ack.h"
 #include "cc/output/output_surface_client.h"
 #include "services/ui/public/cpp/window_surface.h"
 
 namespace ui {
 
 OutputSurface::OutputSurface(
     const scoped_refptr<cc::ContextProvider>& context_provider,
     std::unique_ptr<ui::WindowSurface> surface)
     : cc::OutputSurface(context_provider, nullptr, nullptr),
       surface_(std::move(surface)) {
@@ skipping 31 matching lines @@
   // destroyed then SubmitCompositorFrame's callback will never get called.
   // Thus, base::Unretained is safe here.
   surface_->SubmitCompositorFrame(
       std::move(frame),
       base::Bind(&OutputSurface::SwapBuffersComplete, base::Unretained(this)));
 }
 
 void OutputSurface::OnResourcesReturned(
     ui::WindowSurface* surface,
     mojo::Array<cc::ReturnedResource> resources) {
-  cc::CompositorFrameAck cfa;
-  cfa.resources = resources.To<cc::ReturnedResourceArray>();
-  ReclaimResources(&cfa);
+  ReclaimResources(resources.To<cc::ReturnedResourceArray>());
 }
 
 void OutputSurface::SwapBuffersComplete() {
   client_->DidSwapBuffersComplete();
 }
 
 }  // namespace ui