Store non-fast scrollable regions on ScrollNode

cc/trees/property_tree_builder.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 "cc/trees/property_tree_builder.h"
 
 #include <stddef.h>
 
 #include <map>
 #include <set>
@@ skipping 1145 matching lines @@
 
   int node_id;
   if (!requires_node) {
     node_id = parent_id;
     data_for_children->scroll_tree_parent = node_id;
   } else {
     ScrollNode node;
     node.owning_layer_id = layer->id();
     node.scrollable = scrollable;
     node.main_thread_scrolling_reasons = main_thread_scrolling_reasons;
-    node.contains_non_fast_scrollable_region =
-        contains_non_fast_scrollable_region;
+    node.non_fast_scrollable_region = layer->non_fast_scrollable_region();
     gfx::Size clip_bounds;
     if (layer->scroll_clip_layer()) {
       clip_bounds = layer->scroll_clip_layer()->bounds();
       DCHECK(layer->scroll_clip_layer()->transform_tree_index() !=
              TransformTree::kInvalidNodeId);
       node.max_scroll_offset_affected_by_page_scale =
           !data_from_ancestor.property_trees->transform_tree
                .Node(layer->scroll_clip_layer()->transform_tree_index())
                ->in_subtree_of_page_scale_layer &&
           data_from_ancestor.in_subtree_of_page_scale_layer;
@@ skipping 370 matching lines @@
       root_layer, page_scale_layer, inner_viewport_scroll_layer,
       outer_viewport_scroll_layer, overscroll_elasticity_layer,
       elastic_overscroll, page_scale_factor, device_scale_factor, viewport,
       device_transform, property_trees, color);
   property_trees->effect_tree.CreateOrReuseRenderSurfaces(
       &render_surfaces, root_layer->layer_tree_impl());
   property_trees->ResetCachedData();
 }
 
 }  // namespace cc