Track slow paths in DisplayItemList

cc/paint/display_item_list.cc

Index: cc/paint/display_item_list.cc
diff --git a/cc/paint/display_item_list.cc b/cc/paint/display_item_list.cc
index b947403a73883fdc2ee0c6d6b05d2d1b6771fccc..4447a5891f1b6dd2eea1b50df4e47b423f08bc47 100644
--- a/cc/paint/display_item_list.cc
+++ b/cc/paint/display_item_list.cc
@@ -243,14 +243,6 @@ void DisplayItemList::Finalize() {
     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_;
 }