CC Animation: Introduce some dirty flags to optimize PushProperties on commit

cc/test/animation_timelines_test_common.cc

Index: cc/test/animation_timelines_test_common.cc
diff --git a/cc/test/animation_timelines_test_common.cc b/cc/test/animation_timelines_test_common.cc
index 5f640b8091f5e53e2cd50cd894511cb12428a887..1567e490408c7097fe2e2fe93ab32e7f20abf85b 100644
--- a/cc/test/animation_timelines_test_common.cc
+++ b/cc/test/animation_timelines_test_common.cc
@@ -518,4 +518,33 @@ int AnimationTimelinesTest::NextTestLayerId() {
   return next_test_layer_id_;
 }
 
+bool AnimationTimelinesTest::CheckPlayerTimelineNeedsPushProperties(
+    bool needs_push_properties) const {
+  DCHECK(player_);
+  DCHECK(timeline_);
+
+  bool result = true;
+
+  if (player_->needs_push_properties() != needs_push_properties) {
+    ADD_FAILURE() << "player_->needs_push_properties() expected to be "
+                  << needs_push_properties;
+    result = false;
+  }
+  if (timeline_->needs_push_properties() != needs_push_properties) {
+    ADD_FAILURE() << "timeline_->needs_push_properties() expected to be "
+                  << needs_push_properties;
+    result = false;
+  }
+  if (player_->element_animations() &&
+      player_->element_animations()->needs_push_properties() !=
+          needs_push_properties) {
+    ADD_FAILURE() << "player_->element_animations()->needs_push_properties() "
+                     "expected to be "
+                  << needs_push_properties;
+    result = false;
+  }
+
+  return result;
+}
+
 }  // namespace cc