cc: Emulate BeginFrame in OutputSurfaces that don't support it natively

cc/trees/layer_tree_host_unittest_animation.cc

 // Copyright 2012 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 "cc/animation/animation_curve.h"
 #include "cc/animation/layer_animation_controller.h"
 #include "cc/animation/timing_function.h"
 #include "cc/layers/layer.h"
@@ skipping 175 matching lines @@
   virtual void BeginTest() OVERRIDE {
     PostAddAnimationToMainThread(layer_tree_host()->root_layer());
   }
 
   virtual void AnimateLayers(
       LayerTreeHostImpl* host_impl,
       base::TimeTicks monotonic_time) OVERRIDE {
     started_animating_ = true;
   }
 
-  virtual void DrawLayersOnThread(LayerTreeHostImpl* tree_impl) OVERRIDE {
+  virtual void DrawLayersOnThread(LayerTreeHostImpl* host_impl) OVERRIDE {
     if (started_animating_)
       EndTest();
   }
 
   virtual bool PrepareToDrawOnThread(
       LayerTreeHostImpl* host_impl,
       LayerTreeHostImpl::FrameData* frame,
       bool result) OVERRIDE {
     return false;
   }
 
-  virtual void AfterTest() OVERRIDE {}
+  virtual void AfterTest() OVERRIDE { }
 
  private:
   bool started_animating_;
 };
 
 // Starvation can only be an issue with the MT compositor.
 MULTI_THREAD_TEST_F(LayerTreeHostAnimationTestCheckerboardDoesNotStarveDraws);
 
 // Ensures that animations eventually get deleted.
 class LayerTreeHostAnimationTestAnimationsGetDeleted
@@ skipping 584 matching lines @@
   int finished_times_;
   FakeContentLayerClient client_;
   scoped_refptr<FakeContentLayer> content_;
 };
 
 MULTI_THREAD_TEST_F(
     LayerTreeHostAnimationTestCheckerboardDoesntStartAnimations);
 
 }  // namespace
 }  // namespace cc