Add BeginFrameObserverProxy

cc/trees/layer_tree_host_unittest.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/trees/layer_tree_host.h"
 
 #include <algorithm>
 
 #include "base/auto_reset.h"
 #include "base/synchronization/lock.h"
@@ skipping 5268 matching lines @@
 };
 
 MULTI_THREAD_TEST_F(LayerTreeHostTestContinuousPainting);
 
 class LayerTreeHostTestSendBeginFramesToChildren : public LayerTreeHostTest {
  public:
   LayerTreeHostTestSendBeginFramesToChildren()
       : begin_frame_sent_to_children_(false) {
   }
 
-  void InitializeSettings(LayerTreeSettings* settings) override {
-    settings->forward_begin_frames_to_children = true;
-  }
-
   void BeginTest() override {
     // Kick off the test with a commit.
     PostSetNeedsCommitToMainThread();
   }
 
   void SendBeginFramesToChildren(const BeginFrameArgs& args) override {
     begin_frame_sent_to_children_ = true;
     EndTest();
   }
 
@@ skipping 16 matching lines @@
 
 class LayerTreeHostTestSendBeginFramesToChildrenWithExternalBFS
     : public LayerTreeHostTest {
  public:
   LayerTreeHostTestSendBeginFramesToChildrenWithExternalBFS()
       : begin_frame_sent_to_children_(false) {
   }
 
   void InitializeSettings(LayerTreeSettings* settings) override {
     settings->use_external_begin_frame_source = true;
-    settings->forward_begin_frames_to_children = true;
   }
 
   void BeginTest() override {
     // Kick off the test with a commit.
     PostSetNeedsCommitToMainThread();
   }
 
   void SendBeginFramesToChildren(const BeginFrameArgs& args) override {
     begin_frame_sent_to_children_ = true;
     EndTest();
@@ skipping 1021 matching lines @@
 
   void AfterTest() override {}
 
  private:
   scoped_refptr<Layer> child_;
 };
 
 SINGLE_AND_MULTI_THREAD_TEST_F(LayerPreserveRenderSurfaceFromOutputRequests);
 
 }  // namespace cc