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

cc/trees/layer_tree_host_unittest_animation.cc

Index: cc/trees/layer_tree_host_unittest_animation.cc
diff --git a/cc/trees/layer_tree_host_unittest_animation.cc b/cc/trees/layer_tree_host_unittest_animation.cc
index c448002ff479a5f9b06ea4ddce541f8a94f4ce7d..29cc4f44ff52e86f80aa2695384adff12b24af7e 100644
--- a/cc/trees/layer_tree_host_unittest_animation.cc
+++ b/cc/trees/layer_tree_host_unittest_animation.cc
@@ -193,7 +193,7 @@ class LayerTreeHostAnimationTestCheckerboardDoesNotStarveDraws
     started_animating_ = true;
   }
 
-  virtual void DrawLayersOnThread(LayerTreeHostImpl* tree_impl) OVERRIDE {
+  virtual void DrawLayersOnThread(LayerTreeHostImpl* host_impl) OVERRIDE {
     if (started_animating_)
       EndTest();
   }
@@ -205,7 +205,7 @@ class LayerTreeHostAnimationTestCheckerboardDoesNotStarveDraws
     return false;
   }
 
-  virtual void AfterTest() OVERRIDE {}
+  virtual void AfterTest() OVERRIDE { }
 
  private:
   bool started_animating_;