Pass collected frame timing events to Blink

cc/trees/thread_proxy.cc

Index: cc/trees/thread_proxy.cc
diff --git a/cc/trees/thread_proxy.cc b/cc/trees/thread_proxy.cc
index 3010fba95c32165329df0ad5ea7a3d56d8c2a879..c6efcba3865fc6ec151e027b07162fda0dc5d827 100644
--- a/cc/trees/thread_proxy.cc
+++ b/cc/trees/thread_proxy.cc
@@ -710,6 +710,14 @@ void ThreadProxy::ScheduledActionSendBeginMainFrame() {
       impl().layer_tree_host_impl->memory_allocation_priority_cutoff();
   begin_main_frame_state->evicted_ui_resources =
       impl().layer_tree_host_impl->EvictedUIResourcesExist();
+  begin_main_frame_state->frame_composite_events =
+      impl()
+          .layer_tree_host_impl->frame_timing_tracker()
+          ->GroupCompositeCountsByRectId();
+  begin_main_frame_state->frame_render_events =
+      impl()
+          .layer_tree_host_impl->frame_timing_tracker()
+          ->GroupMainFrameCountsByRectId();
   // TODO(vmpstr): This needs to be fixed if
   // main_frame_before_activation_enabled is set, since we might run this code
   // twice before recording a duration. crbug.com/469824
@@ -791,6 +799,12 @@ void ThreadProxy::BeginMainFrame(
   layer_tree_host()->ApplyScrollAndScale(
       begin_main_frame_state->scroll_info.get());
 
+  layer_tree_host()->RecordCompositeTimings(
+      begin_main_frame_state->frame_composite_events.get());
+
+  layer_tree_host()->RecordRenderTimings(
+      begin_main_frame_state->frame_render_events.get());
+
   layer_tree_host()->WillBeginMainFrame();
 
   layer_tree_host()->BeginMainFrame(begin_main_frame_state->begin_frame_args);