cc: Toward merging DrawFrame and SwapBuffers in DelegatingRenderer.

cc/test/layer_tree_test.cc

 // Copyright 2011 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/layer_tree_test.h"
 
 #include "base/command_line.h"
 #include "base/location.h"
 #include "base/memory/ptr_util.h"
 #include "base/run_loop.h"
@@ skipping 165 matching lines @@
     test_hooks_->WillPrepareTilesOnThread(this);
     return LayerTreeHostImpl::PrepareTiles();
   }
 
   DrawResult PrepareToDraw(FrameData* frame) override {
     test_hooks_->WillPrepareToDrawOnThread(this);
     DrawResult draw_result = LayerTreeHostImpl::PrepareToDraw(frame);
     return test_hooks_->PrepareToDrawOnThread(this, frame, draw_result);
   }
 
-  void DrawLayers(FrameData* frame) override {
-    LayerTreeHostImpl::DrawLayers(frame);
+  bool SwapBuffers(const FrameData& frame) override {

[danakj, 2016/09/07 00:25:35]

Eventually LTHI::SwapBuffers will become DrawLayers again. Or maybe it'll all be
PrepareToDraw we'll see.

+    bool r = LayerTreeHostImpl::SwapBuffers(frame);
     test_hooks_->DrawLayersOnThread(this);
+    return r;
   }
 
   void NotifyReadyToActivate() override {
     if (block_notify_ready_to_activate_for_testing_) {
       notify_ready_to_activate_was_blocked_ = true;
     } else {
       LayerTreeHostImpl::NotifyReadyToActivate();
       test_hooks_->NotifyReadyToActivateOnThread(this);
     }
   }
@@ skipping 741 matching lines @@
 }
 
 LayerTreeHost* LayerTreeTest::remote_client_layer_tree_host() {
   DCHECK(IsRemoteTest());
   DCHECK(task_runner_provider()->IsMainThread() ||
          task_runner_provider()->IsMainThreadBlocked());
   return remote_client_layer_tree_host_.get();
 }
 
 }  // namespace cc