cc: Directly use property trees to calculate clip rect

cc/trees/property_tree.cc

 // Copyright 2014 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.
 
 #include <stddef.h>
 
 #include <set>
 #include <vector>
 
 #include "base/logging.h"
@@ skipping 486 matching lines @@
       has_copy_request(false),
       has_background_filters(false),
       hidden_by_backface_visibility(false),
       double_sided(false),
       is_drawn(true),
       subtree_hidden(false),
       has_potential_opacity_animation(false),
       is_currently_animating_opacity(false),
       effect_changed(false),
       num_copy_requests_in_subtree(0),
+      has_unclipped_descendants(false),
       transform_id(0),
       clip_id(0),
       target_id(0) {}
 
 EffectNodeData::EffectNodeData(const EffectNodeData& other) = default;
 
 bool EffectNodeData::operator==(const EffectNodeData& other) const {
   return opacity == other.opacity &&
          screen_space_opacity == other.screen_space_opacity &&
          has_render_surface == other.has_render_surface &&
@@ skipping 1559 matching lines @@
   value->EndDictionary();
 
   value->BeginDictionary("scroll_tree");
   scroll_tree.AsValueInto(value.get());
   value->EndDictionary();
 
   return value;
 }
 
 }  // namespace cc