Refactoring the way begin frame sources inside scheduler work.

cc/test/fake_layer_tree_host_impl_client.h

Index: cc/test/fake_layer_tree_host_impl_client.h
diff --git a/cc/test/fake_layer_tree_host_impl_client.h b/cc/test/fake_layer_tree_host_impl_client.h
index 2f33b7aea4cb05cc79a9128d5242711c5ade152a..3dbd17b2f1ef531870d38ff4579a2163b8cff26c 100644
--- a/cc/test/fake_layer_tree_host_impl_client.h
+++ b/cc/test/fake_layer_tree_host_impl_client.h
@@ -15,13 +15,10 @@ class FakeLayerTreeHostImplClient : public LayerTreeHostImplClient {
   // LayerTreeHostImplClient implementation.
   virtual void UpdateRendererCapabilitiesOnImplThread() OVERRIDE {}
   virtual void DidLoseOutputSurfaceOnImplThread() OVERRIDE {}
-  virtual void CommitVSyncParameters(base::TimeTicks timebase,
-                                     base::TimeDelta interval) OVERRIDE {}
   virtual void SetEstimatedParentDrawTime(base::TimeDelta draw_time) OVERRIDE {}
   virtual void SetMaxSwapsPendingOnImplThread(int max) OVERRIDE {}
   virtual void DidSwapBuffersOnImplThread() OVERRIDE {}
   virtual void DidSwapBuffersCompleteOnImplThread() OVERRIDE {}
-  virtual void BeginFrame(const BeginFrameArgs& args) OVERRIDE {}
   virtual void OnCanDrawStateChanged(bool can_draw) OVERRIDE {}
   virtual void NotifyReadyToActivate() OVERRIDE {}
   virtual void SetNeedsRedrawOnImplThread() OVERRIDE {}