Don't PushProperties every commit for animating layers

cc/test/animation_test_common.cc

Index: cc/test/animation_test_common.cc
diff --git a/cc/test/animation_test_common.cc b/cc/test/animation_test_common.cc
index 22b7793a38225e004299f67275ab9b01a2040a2b..7ab26a5d8b548500392d6acf9b21ae4b0c8e0bf6 100644
--- a/cc/test/animation_test_common.cc
+++ b/cc/test/animation_test_common.cc
@@ -186,7 +186,8 @@ float FakeFloatTransition::GetValue(double time) const {
 }
 
 FakeLayerAnimationValueObserver::FakeLayerAnimationValueObserver()
-    : opacity_(0.0f) {}
+    : opacity_(0.0f),
+      animation_waiting_for_deletion_(false) {}
 
 FakeLayerAnimationValueObserver::~FakeLayerAnimationValueObserver() {}
 
@@ -204,6 +205,10 @@ void FakeLayerAnimationValueObserver::OnTransformAnimated(
   transform_ = transform;
 }
 
+void FakeLayerAnimationValueObserver::OnAnimationWaitingForDeletion() {
+  animation_waiting_for_deletion_ = true;
+}
+
 bool FakeLayerAnimationValueObserver::IsActive() const {
   return true;
 }