cc: Switch RenderingStats collection in Layer::Update() to RenderingStatsInstrumentation

cc/debug/rendering_stats_instrumentation.cc

 // 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.
 
 #include "cc/debug/rendering_stats_instrumentation.h"
 
 namespace cc {
 
 // static
 scoped_ptr<RenderingStatsInstrumentation>
@@ skipping 18 matching lines @@
   return base::TimeTicks();
 }
 
 base::TimeDelta RenderingStatsInstrumentation::EndRecording(
     base::TimeTicks start_time) const {
   if (!start_time.is_null())
     return base::TimeTicks::HighResNow() - start_time;
   return base::TimeDelta();
 }
 
-void RenderingStatsInstrumentation::AddStats(const RenderingStats& other) {
-  if (!record_rendering_stats_)
-    return;
-
-  base::AutoLock scoped_lock(lock_);
-  rendering_stats_.Add(other);
-}
-
 void RenderingStatsInstrumentation::IncrementAnimationFrameCount() {
   if (!record_rendering_stats_)
     return;
 
   base::AutoLock scoped_lock(lock_);
   rendering_stats_.animation_frame_count++;
 }
 
 void RenderingStatsInstrumentation::SetScreenFrameCount(int64 count) {
   if (!record_rendering_stats_)
@@ skipping 100 matching lines @@
 
 void RenderingStatsInstrumentation::IncrementDeferredImageCacheHitCount() {
   if (!record_rendering_stats_)
     return;
 
   base::AutoLock scoped_lock(lock_);
   rendering_stats_.total_deferred_image_cache_hit_count++;
 }
 
 }  // namespace cc