cc: Dedup IPCs to return resources to client

cc/test/test_delegating_output_surface.cc

 // Copyright 2016 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 "cc/test/test_delegating_output_surface.h"
 
 #include <stdint.h>
 #include <utility>
 
 #include "cc/output/begin_frame_args.h"
-#include "cc/output/compositor_frame_ack.h"
 #include "cc/test/begin_frame_args_test.h"
 
 static constexpr uint32_t kCompositorClientId = 1;
 
 namespace cc {
 
 TestDelegatingOutputSurface::TestDelegatingOutputSurface(
     scoped_refptr<ContextProvider> compositor_context_provider,
     scoped_refptr<ContextProvider> worker_context_provider,
     std::unique_ptr<Display> display,
@@ skipping 90 matching lines @@
 }
 
 uint32_t TestDelegatingOutputSurface::GetFramebufferCopyTextureFormat() {
   // This is a delegating output surface, no framebuffer/direct drawing support.
   NOTREACHED();
   return 0;
 }
 
 void TestDelegatingOutputSurface::ReturnResources(
     const ReturnedResourceArray& resources) {
-  CompositorFrameAck ack;
-  ack.resources = resources;
-  client_->ReclaimResources(&ack);
+  client_->ReclaimResources(resources);
 }
 
 void TestDelegatingOutputSurface::SetBeginFrameSource(
     BeginFrameSource* begin_frame_source) {
   client_->SetBeginFrameSource(begin_frame_source);
 }
 
 }  // namespace cc