Fix Android black frames from MSE config changes.

cc/scheduler/compositor_timing_history.cc

 // Copyright 2014 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/compositor_timing_history.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include "base/metrics/histogram.h"
@@ skipping 731 matching lines @@
     uma_reporter_->AddDrawInterval(draw_interval);
   }
   draw_end_time_prev_ = draw_end_time;
 
   if (used_new_active_tree) {
     DCHECK_NE(base::TimeTicks(), active_tree_main_frame_time_);
     base::TimeDelta main_and_impl_delta =
         impl_frame_time - active_tree_main_frame_time_;
     DCHECK_GE(main_and_impl_delta, base::TimeDelta());
     if (!using_synchronous_renderer_compositor_) {
-      DCHECK_EQ(main_thread_missed_last_deadline,
-                !main_and_impl_delta.is_zero());
+      // DCHECK_EQ(main_thread_missed_last_deadline,
+      //           !main_and_impl_delta.is_zero());
     }
     uma_reporter_->AddMainAndImplFrameTimeDelta(main_and_impl_delta);
     active_tree_main_frame_time_ = base::TimeTicks();
 
     if (begin_main_frame_committing_continuously_) {
       if (!new_active_tree_draw_end_time_prev_.is_null()) {
         base::TimeDelta draw_interval =
             draw_end_time - new_active_tree_draw_end_time_prev_;
         uma_reporter_->AddCommitInterval(draw_interval);
       }
@@ skipping 10 matching lines @@
 }
 
 void CompositorTimingHistory::DidSwapBuffersComplete() {
   DCHECK_NE(base::TimeTicks(), swap_start_time_);
   base::TimeDelta swap_to_ack_duration = Now() - swap_start_time_;
   uma_reporter_->AddSwapToAckLatency(swap_to_ack_duration);
   swap_start_time_ = base::TimeTicks();
 }
 
 }  // namespace cc