cc : Use transform node data to determine which transform wins at commit

cc/trees/property_tree_builder.cc

Index: cc/trees/property_tree_builder.cc
diff --git a/cc/trees/property_tree_builder.cc b/cc/trees/property_tree_builder.cc
index 6b9f8e946527278603c1c4cab5cd5d5d4148a75d..f29f46c46e2b5fea676969bd1b26645c0686b58c 100644
--- a/cc/trees/property_tree_builder.cc
+++ b/cc/trees/property_tree_builder.cc
@@ -516,6 +516,7 @@ bool AddTransformNodeIfNeeded(
   DCHECK_NE(node->data.target_id, kInvalidPropertyTreeNodeId);
 
   node->data.has_potential_animation = has_potentially_animated_transform;
+  node->data.is_currently_animating = layer->TransformIsAnimating();
   if (has_potentially_animated_transform) {
     float maximum_animation_target_scale = 0.f;
     if (layer->MaximumTargetScale(&maximum_animation_target_scale)) {