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 f45219904982ccff0e70daffe5288f202cf564c7..832c81e0b4a75b79fc53e7cf70ad509e20e8d107 100644
--- a/cc/paint/display_item_list.cc
+++ b/cc/paint/display_item_list.cc
@@ -265,14 +265,6 @@ 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_;
-}
-
 int DisplayItemList::ApproximateOpCount() const {
   return approximate_op_count_;
 }