Adding a test hook for ScheduledActionAnimate.

cc/test/layer_tree_test.h

Index: cc/test/layer_tree_test.h
diff --git a/cc/test/layer_tree_test.h b/cc/test/layer_tree_test.h
index b11196391911db7ef4688701f7abbac617aa5f12..8f38dda4999dd8648aac24224560414e7a49b2e8 100644
--- a/cc/test/layer_tree_test.h
+++ b/cc/test/layer_tree_test.h
@@ -79,11 +79,12 @@ class TestHooks : public AnimationDelegate {
   virtual base::TimeDelta LowFrequencyAnimationInterval() const;
 
   // Hooks for SchedulerClient.
-  virtual void ScheduledActionBeginOutputSurfaceCreation() {}
   virtual void ScheduledActionWillSendBeginMainFrame() {}
   virtual void ScheduledActionSendBeginMainFrame() {}
-  virtual void ScheduledActionCommit() {}
   virtual void ScheduledActionDrawAndSwapIfPossible() {}
+  virtual void ScheduledActionAnimate() {}
+  virtual void ScheduledActionCommit() {}
+  virtual void ScheduledActionBeginOutputSurfaceCreation() {}
 
   // Implementation of AnimationDelegate:
   virtual void NotifyAnimationStarted(base::TimeTicks monotonic_time,