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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef CC_TREES_PROXY_TIMING_HISTORY_H_
      6 #define CC_TREES_PROXY_TIMING_HISTORY_H_
      7 
      8 #include "cc/base/rolling_time_delta_history.h"
      9 
     10 namespace cc {
     11 
     12 class ProxyTimingHistory {
     13  public:
     14   ProxyTimingHistory();
     15   ~ProxyTimingHistory();
     16 
     17   base::TimeDelta DrawDurationEstimate() const;
     18   base::TimeDelta BeginMainFrameToCommitDurationEstimate() const;
     19   base::TimeDelta CommitToActivateDurationEstimate() const;
     20 
     21   void DidBeginMainFrame();
     22   void DidCommit();
     23   void DidActivatePendingTree();
     24   void DidStartDrawing();
     25   // Returns draw duration.
     26   base::TimeDelta DidFinishDrawing();
     27 
     28  protected:
     29   RollingTimeDeltaHistory draw_duration_history_;
     30   RollingTimeDeltaHistory begin_main_frame_to_commit_duration_history_;
     31   RollingTimeDeltaHistory commit_to_activate_duration_history_;
     32 
     33   base::TimeTicks begin_main_frame_sent_time_;
     34   base::TimeTicks commit_complete_time_;
     35   base::TimeTicks start_draw_time_;
     36 };
     37 
     38 }  // namespace cc
     39 
     40 #endif  // CC_TREES_PROXY_TIMING_HISTORY_H_
     41