cc: Record statistics about approximated content.

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 35 matching lines @@
   }
 
   base::TimeTicks StartRecording() const;
   base::TimeDelta EndRecording(base::TimeTicks start_time) const;
 
   void IncrementFrameCount(int64 count, bool main_thread);
   void AddPaint(base::TimeDelta duration, int64 pixels);
   void AddRecord(base::TimeDelta duration, int64 pixels);
   void AddRaster(base::TimeDelta duration, int64 pixels);
   void AddAnalysis(base::TimeDelta duration, int64 pixels);
+  void AddVisibleContentArea(int64 area);
+  void AddApproximatedVisibleContentArea(int64 area);
 
  protected:
   RenderingStatsInstrumentation();
 
  private:
   // TODO(ernstm): rename to *_thread_rendering_stats_*
   MainThreadRenderingStats main_stats_;
   MainThreadRenderingStats main_stats_accu_;
   ImplThreadRenderingStats impl_stats_;
   ImplThreadRenderingStats impl_stats_accu_;
 
   bool record_rendering_stats_;
 
   base::Lock lock_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderingStatsInstrumentation);
 };
 
 }  // namespace cc
 
 #endif  // CC_DEBUG_RENDERING_STATS_INSTRUMENTATION_H_