Track slow paths in DisplayItemList

cc/paint/display_item_list.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/paint/display_item_list.h"
 
 #include <stddef.h>
 
 #include <string>
 
@@ skipping 225 matching lines @@
       << "items.size() " << items_.size() << " visual_rects.size() "
       << visual_rects_.size();
   rtree_.Build(visual_rects_);
 
   if (!retain_visual_rects_)
     // This clears both the vector and the vector's capacity, since
     // visual_rects won't be used anymore.
     std::vector<gfx::Rect>().swap(visual_rects_);
 }
 
-bool DisplayItemList::IsSuitableForGpuRasterization() const {
-  // TODO(wkorman): This is more permissive than Picture's implementation, since
-  // none of the items might individually trigger a veto even though they
-  // collectively have enough "bad" operations that a corresponding Picture
-  // would get vetoed. See crbug.com/513016.
-  return all_items_are_suitable_for_gpu_rasterization_;
-}
-
 size_t DisplayItemList::OpCount() const {
   return op_count_;
 }
 
 size_t DisplayItemList::ApproximateMemoryUsage() const {
   size_t memory_usage = sizeof(*this);
 
   size_t external_memory_usage = 0;
   for (const auto& item : items_) {
     size_t bytes = 0;
@@ skipping 272 matching lines @@
     std::vector<DrawImage>* images) {
   image_map_.GetDiscardableImagesInRect(rect, contents_scale,
                                         target_color_space, images);
 }
 
 gfx::Rect DisplayItemList::GetRectForImage(PaintImage::Id image_id) const {
   return image_map_.GetRectForImage(image_id);
 }
 
 }  // namespace cc