Share animations from compositor to main thread.

cc/test/test_hooks.h

Index: cc/test/test_hooks.h
diff --git a/cc/test/test_hooks.h b/cc/test/test_hooks.h
index a00233dcb22993a78ee2538f2d2f23c68d9c86b4..0a36af695c14c63327344f584deaf41c967684d5 100644
--- a/cc/test/test_hooks.h
+++ b/cc/test/test_hooks.h
@@ -137,6 +137,10 @@ class TestHooks : public AnimationDelegate {
   void NotifyAnimationAborted(base::TimeTicks monotonic_time,
                               TargetProperty::Type target_property,
                               int group) override {}
+  void NotifyAnimationTakeover(base::TimeTicks monotonic_time,
+                               TargetProperty::Type target_property,
+                               double animation_start_time,
+                               scoped_ptr<AnimationCurve> curve) override {}
 
   virtual void RequestNewOutputSurface() = 0;