cc: Add MainAndImplFrameTimeDelta UMA.

cc/scheduler/scheduler.cc

 // Copyright 2011 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/scheduler/scheduler.h"
 
 #include <algorithm>
 
 #include "base/auto_reset.h"
 #include "base/logging.h"
@@ skipping 646 matching lines @@
   compositor_timing_history_->WillFinishImplFrame(
       state_machine_.needs_redraw());
   state_machine_.OnBeginImplFrameDeadline();
   ProcessScheduledActions();
   FinishImplFrame();
 }
 
 void Scheduler::DrawAndSwapIfPossible() {
   bool drawing_with_new_active_tree =
       state_machine_.active_tree_needs_first_draw();
+  bool main_thread_missed_last_deadline =
+      state_machine_.main_thread_missed_last_deadline();
   compositor_timing_history_->WillDraw();
   state_machine_.WillDraw();
   DrawResult result = client_->ScheduledActionDrawAndSwapIfPossible();
   state_machine_.DidDraw(result);
-  compositor_timing_history_->DidDraw(drawing_with_new_active_tree);
+  compositor_timing_history_->DidDraw(drawing_with_new_active_tree,
+                                      main_thread_missed_last_deadline);
 }
 
 void Scheduler::DrawAndSwapForced() {
   bool drawing_with_new_active_tree =
       state_machine_.active_tree_needs_first_draw();
+  bool main_thread_missed_last_deadline =
+      state_machine_.main_thread_missed_last_deadline();
   compositor_timing_history_->WillDraw();
   state_machine_.WillDraw();
   DrawResult result = client_->ScheduledActionDrawAndSwapForced();
   state_machine_.DidDraw(result);
-  compositor_timing_history_->DidDraw(drawing_with_new_active_tree);
+  compositor_timing_history_->DidDraw(drawing_with_new_active_tree,
+                                      main_thread_missed_last_deadline);
 }
 
 void Scheduler::SetDeferCommits(bool defer_commits) {
   TRACE_EVENT1("cc", "Scheduler::SetDeferCommits",
                 "defer_commits",
                 defer_commits);
   state_machine_.SetDeferCommits(defer_commits);
   ProcessScheduledActions();
 }
 
@@ skipping 210 matching lines @@
 }
 
 bool Scheduler::IsBeginMainFrameSentOrStarted() const {
   return (state_machine_.begin_main_frame_state() ==
               SchedulerStateMachine::BEGIN_MAIN_FRAME_STATE_SENT ||
           state_machine_.begin_main_frame_state() ==
               SchedulerStateMachine::BEGIN_MAIN_FRAME_STATE_STARTED);
 }
 
 }  // namespace cc