cc: Heuristic for Renderer latency recovery

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 148 matching lines @@
 
  private:
   DISALLOW_COPY_AND_ASSIGN(TestSyntheticBeginFrameSource);
 };
 
 class FakeCompositorTimingHistory : public CompositorTimingHistory {
  public:
   static scoped_ptr<FakeCompositorTimingHistory> Create();
   ~FakeCompositorTimingHistory() override;
 
+  void SetAllEstimatesTo(base::TimeDelta duration);
+
   void SetBeginMainFrameToCommitDurationEstimate(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 CommitToReadyToActivateDurationEstimate() const override;
   base::TimeDelta PrepareTilesDurationEstimate() const override;
   base::TimeDelta ActivateDurationEstimate() const override;
@@ skipping 27 matching lines @@
       BeginFrameSource* external_frame_source,
       scoped_ptr<CompositorTimingHistory> compositor_timing_history);
 
   // Extra test helper functionality
   bool IsBeginRetroFrameArgsEmpty() const {
     return begin_retro_frame_args_.empty();
   }
 
   bool CanStart() const { return state_machine_.CanStartForTesting(); }
 
+  bool NeedsCommit() const { return state_machine_.needs_commit(); }
+
   BeginFrameSource& frame_source() { return *frame_source_; }
   bool FrameProductionThrottled() { return throttle_frame_production_; }
 
+  bool MainThreadIsInHighLatencyMode() const {
+    return state_machine_.MainThreadIsInHighLatencyMode();
+  }
+
   ~TestScheduler() override;
 
   base::TimeDelta BeginImplFrameInterval() {
     return begin_impl_frame_tracker_.Interval();
   }
 
  protected:
   // Overridden from Scheduler.
   base::TimeTicks Now() const override;
 
@@ skipping 10 matching lines @@
       scoped_ptr<CompositorTimingHistory> compositor_timing_history);
 
   base::SimpleTestTickClock* now_src_;
 
   DISALLOW_COPY_AND_ASSIGN(TestScheduler);
 };
 
 }  // namespace cc
 
 #endif  // CC_TEST_SCHEDULER_TEST_COMMON_H_