Raster display item lists via a visual rect RTree.

ui/compositor/layer.cc

 // Copyright (c) 2012 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 "ui/compositor/layer.h"
 
 #include <algorithm>
 
 #include "base/auto_reset.h"
 #include "base/command_line.h"
@@ skipping 746 matching lines @@
 scoped_refptr<cc::DisplayItemList> Layer::PaintContentsToDisplayList(
     ContentLayerClient::PaintingControlSetting painting_control) {
   TRACE_EVENT1("ui", "Layer::PaintContentsToDisplayList", "name", name_);
   gfx::Rect local_bounds(bounds().size());
   gfx::Rect invalidation(
       gfx::IntersectRects(damaged_region_.bounds(), local_bounds));
   ClearDamagedRects();
   cc::DisplayItemListSettings settings;
   settings.use_cached_picture = false;
   scoped_refptr<cc::DisplayItemList> display_list =
-      cc::DisplayItemList::Create(PaintableRegion(), settings);
+      cc::DisplayItemList::Create(settings);
   if (delegate_) {
     delegate_->OnPaintLayer(
         PaintContext(display_list.get(), device_scale_factor_, invalidation));
   }
   display_list->Finalize();
   return display_list;
 }
 
 bool Layer::FillsBoundsCompletely() const { return fills_bounds_completely_; }
 
@@ skipping 298 matching lines @@
     animator_->RemoveFromCollection(collection);
   for (auto* child : children_)
     child->RemoveAnimatorsInTreeFromCollection(collection);
 }
 
 bool Layer::IsAnimating() const {
   return animator_.get() && animator_->is_animating();
 }
 
 }  // namespace ui