[not for review] Add Draw entries to window Performance Timeline

cc/layers/layer.cc

Index: cc/layers/layer.cc
diff --git a/cc/layers/layer.cc b/cc/layers/layer.cc
index 63b9990d65faf0e9cb34cac442e7a2c03c44e08a..638741614fc6826db7a8ae5bc85852fd7f29d438 100644
--- a/cc/layers/layer.cc
+++ b/cc/layers/layer.cc
@@ -736,6 +736,15 @@ void Layer::SetTouchEventHandlerRegion(const Region& region) {
   SetNeedsCommit();
 }
 
+void Layer::SetSmoothnessTimingRequests(
+    const SmoothnessTimingRequestsType& rects) {
+  DCHECK(IsPropertyChangeAllowed());
+  if (smoothness_timing_requests_ == rects)
+    return;
+  smoothness_timing_requests_ = rects;
+  SetNeedsCommit();
+}
+
 void Layer::SetDrawCheckerboardForMissingTiles(bool checkerboard) {
   DCHECK(IsPropertyChangeAllowed());
   if (draw_checkerboard_for_missing_tiles_ == checkerboard)
@@ -889,6 +898,7 @@ void Layer::PushPropertiesTo(LayerImpl* layer) {
   layer->SetHaveScrollEventHandlers(have_scroll_event_handlers_);
   layer->SetNonFastScrollableRegion(non_fast_scrollable_region_);
   layer->SetTouchEventHandlerRegion(touch_event_handler_region_);
+  layer->SetSmoothnessTimingRequests(smoothness_timing_requests_);
   layer->SetContentsOpaque(contents_opaque_);
   if (!layer->OpacityIsAnimatingOnImplOnly() && !OpacityIsAnimating())
     layer->SetOpacity(opacity_);