cc: Don't attempt main thread synchronization if it is slow.

cc/test/scheduler_test_common.h

 // 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.
 
 #ifndef CC_TEST_SCHEDULER_TEST_COMMON_H_
 #define CC_TEST_SCHEDULER_TEST_COMMON_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 151 matching lines @@
 };
 
 class FakeCompositorTimingHistory : public CompositorTimingHistory {
  public:
   static scoped_ptr<FakeCompositorTimingHistory> Create();
   ~FakeCompositorTimingHistory() override;
 
   void SetAllEstimatesTo(base::TimeDelta duration);
 
   void SetBeginMainFrameToCommitDurationEstimate(base::TimeDelta duration);
+  void SetBeginMainFrameQueueDurationCriticalEstimate(base::TimeDelta duration);
+  void SetBeginMainFrameQueueDurationNotCriticalEstimate(
+      base::TimeDelta duration);
+  void SetBeginMainFrameStartToCommitDurationEstimate(base::TimeDelta duration);
   void SetCommitToReadyToActivateDurationEstimate(base::TimeDelta duration);
   void SetPrepareTilesDurationEstimate(base::TimeDelta duration);
   void SetActivateDurationEstimate(base::TimeDelta duration);
   void SetDrawDurationEstimate(base::TimeDelta duration);
 
   base::TimeDelta BeginMainFrameToCommitDurationEstimate() const override;
+  base::TimeDelta BeginMainFrameQueueDurationCriticalEstimate() const override;
+  base::TimeDelta BeginMainFrameQueueDurationNotCriticalEstimate()
+      const override;
+  base::TimeDelta BeginMainFrameStartToCommitDurationEstimate() const override;
   base::TimeDelta CommitToReadyToActivateDurationEstimate() const override;
   base::TimeDelta PrepareTilesDurationEstimate() const override;
   base::TimeDelta ActivateDurationEstimate() const override;
   base::TimeDelta DrawDurationEstimate() const override;
 
  protected:
   FakeCompositorTimingHistory(scoped_ptr<RenderingStatsInstrumentation>
                                   rendering_stats_instrumentation_owned);
 
   scoped_ptr<RenderingStatsInstrumentation>
       rendering_stats_instrumentation_owned_;
 
   base::TimeDelta begin_main_frame_to_commit_duration_;
+  base::TimeDelta begin_main_frame_queue_duration_critical_;
+  base::TimeDelta begin_main_frame_queue_duration_not_critical_;
+  base::TimeDelta begin_main_frame_start_to_commit_duration_;
   base::TimeDelta commit_to_ready_to_activate_duration_;
   base::TimeDelta prepare_tiles_duration_;
   base::TimeDelta activate_duration_;
   base::TimeDelta draw_duration_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(FakeCompositorTimingHistory);
 };
 
 class TestScheduler : public Scheduler {
@@ skipping 24 matching lines @@
   bool MainThreadMissedLastDeadline() const {
     return state_machine_.main_thread_missed_last_deadline();
   }
 
   ~TestScheduler() override;
 
   base::TimeDelta BeginImplFrameInterval() {
     return begin_impl_frame_tracker_.Interval();
   }
 
+  // Note: This setting will be overriden on the next BeginFrame in the
+  // scheduler. To control the value it gets on the next BeginFrame
+  // Pass in a fake CompositorTimingHistory that indicates BeginMainFrame
+  // to Activation is fast.
+  void SetCriticalBeginMainFrameToActivateIsFast(bool is_fast) {
+    state_machine_.SetCriticalBeginMainFrameToActivateIsFast(is_fast);
+  }
+
  protected:
   // Overridden from Scheduler.
   base::TimeTicks Now() const override;
 
  private:
   TestScheduler(
       base::SimpleTestTickClock* now_src,
       SchedulerClient* client,
       const SchedulerSettings& scheduler_settings,
       int layer_tree_host_id,
       OrderedSimpleTaskRunner* task_runner,
       BeginFrameSource* external_frame_source,
       scoped_ptr<TestSyntheticBeginFrameSource> synthetic_frame_source,
       scoped_ptr<TestBackToBackBeginFrameSource> unthrottled_frame_source,
       scoped_ptr<CompositorTimingHistory> compositor_timing_history);
 
   base::SimpleTestTickClock* now_src_;
 
   DISALLOW_COPY_AND_ASSIGN(TestScheduler);
 };
 
 }  // namespace cc
 
 #endif  // CC_TEST_SCHEDULER_TEST_COMMON_H_