Update from https://crrev.com/333737

cc/debug/rendering_stats_instrumentation.h

 // Copyright 2013 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_DEBUG_RENDERING_STATS_INSTRUMENTATION_H_
 #define CC_DEBUG_RENDERING_STATS_INSTRUMENTATION_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "base/synchronization/lock.h"
 #include "cc/debug/rendering_stats.h"
@@ skipping 19 matching lines @@
 
   // Read and write access to the record_rendering_stats_ flag is not locked to
   // improve performance. The flag is commonly turned off and hardly changes
   // it's value during runtime.
   bool record_rendering_stats() const { return record_rendering_stats_; }
   void set_record_rendering_stats(bool record_rendering_stats) {
     if (record_rendering_stats_ != record_rendering_stats)
       record_rendering_stats_ = record_rendering_stats;
   }
 
-  base::TimeTicks StartRecording() const;
-  base::TimeDelta EndRecording(base::TimeTicks start_time) const;
+  base::TimeDelta StartRecording() const;
+  base::TimeDelta EndRecording(base::TimeDelta start_time) const;
 
   void IncrementFrameCount(int64 count);
   void AddVisibleContentArea(int64 area);
   void AddApproximatedVisibleContentArea(int64 area);
   void AddDrawDuration(base::TimeDelta draw_duration,
                        base::TimeDelta draw_duration_estimate);
   void AddBeginMainFrameToCommitDuration(
       base::TimeDelta begin_main_frame_to_commit_duration,
       base::TimeDelta begin_main_frame_to_commit_duration_estimate);
   void AddCommitToActivateDuration(
@@ skipping 10 matching lines @@
   bool record_rendering_stats_;
 
   base::Lock lock_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderingStatsInstrumentation);
 };
 
 }  // namespace cc
 
 #endif  // CC_DEBUG_RENDERING_STATS_INSTRUMENTATION_H_