cc: Main thread skip single layers instead of subtrees

cc/proto/property_tree.proto

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 syntax = "proto2";
 
 import "rectf.proto";
 import "scroll_offset.proto";
 import "size.proto";
 import "synced_property.proto";
@@ skipping 19 matching lines @@
   optional Transform to_screen = 7;
   optional Transform from_screen = 8;
 
   optional int64 target_id = 9;
   optional int64 content_target_id = 10;
   optional int64 source_node_id = 11;
   optional bool needs_local_transform_update = 12;
   optional bool is_invertible = 13;
   optional bool ancestors_are_invertible = 14;
   optional bool is_animated = 15;
-  optional bool to_screen_is_animated = 16;
+  optional bool to_screen_is_potentially_animated = 16;
   optional bool has_only_translation_animations = 17;
   optional bool to_screen_has_scale_animation = 18;
   optional bool flattens_inherited_transform = 19;
   optional bool node_and_ancestors_are_flat = 20;
   optional bool node_and_ancestors_have_only_integer_translation = 21;
   optional bool scrolls = 22;
   optional bool needs_sublayer_scale = 23;
   optional bool affected_by_inner_viewport_bounds_delta_x = 24;
   optional bool affected_by_inner_viewport_bounds_delta_y = 25;
   optional bool affected_by_outer_viewport_bounds_delta_x = 26;
@@ skipping 147 matching lines @@
   optional bool changed = 11;
   optional bool full_tree_damaged = 12;
   optional int64 sequence_number = 6;
   optional bool is_main_thread = 13;
   optional bool is_active = 14;
 
   optional Vector2dF inner_viewport_container_bounds_delta = 8;
   optional Vector2dF outer_viewport_container_bounds_delta = 9;
   optional Vector2dF inner_viewport_scroll_bounds_delta = 10;
 }