cc: Rename VSync to BeginFrame

cc/trees/layer_tree_host_impl_unittest.cc

Index: cc/trees/layer_tree_host_impl_unittest.cc
diff --git a/cc/trees/layer_tree_host_impl_unittest.cc b/cc/trees/layer_tree_host_impl_unittest.cc
index fb5a2c4a70d41d4c4edab9841e987e30939115b6..eeab36a55209b75d119e2fd42fd75b9a398c8c3e 100644
--- a/cc/trees/layer_tree_host_impl_unittest.cc
+++ b/cc/trees/layer_tree_host_impl_unittest.cc
@@ -96,7 +96,7 @@ class LayerTreeHostImplTest : public testing::Test,
   virtual void OnSwapBuffersCompleteOnImplThread() OVERRIDE {}
   virtual void OnVSyncParametersChanged(base::TimeTicks timebase,
                                         base::TimeDelta interval) OVERRIDE {}
-  virtual void DidVSync(base::TimeTicks frame_time) OVERRIDE {}
+  virtual void DidBeginImplFrame(base::TimeTicks frame_time) OVERRIDE {}
   virtual void OnCanDrawStateChanged(bool can_draw) OVERRIDE {
     on_can_draw_state_changed_called_ = true;
   }
@@ -129,8 +129,8 @@ class LayerTreeHostImplTest : public testing::Test,
   virtual void RenewTreePriority() OVERRIDE {}
   virtual void RequestScrollbarAnimationOnImplThread(base::TimeDelta delay)
       OVERRIDE {}
-  virtual void DidReceiveLastInputEventForVSync(base::TimeTicks frame_time)
-      OVERRIDE {}
+  virtual void DidReceiveLastInputEventForBeginImplFrame(
+      base::TimeTicks frame_time) OVERRIDE {}
   virtual void DidActivatePendingTree() OVERRIDE {}
 
   void set_reduce_memory_result(bool reduce_memory_result) {