cc: Remove unused metrics from RenderingStats.

cc/resources/picture_pile.cc

 // Copyright 2012 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/resources/picture_pile.h"
 
 #include <algorithm>
 #include <limits>
 #include <vector>
 
@@ skipping 98 matching lines @@
       scoped_refptr<Picture> base_picture = Picture::Create(tile);
       pic_list.push_back(base_picture);
     }
 
     for (PictureList::iterator pic = pic_list.begin();
          pic != pic_list.end(); ++pic) {
       if (!(*pic)->HasRecording()) {
         modified_pile = true;
         TRACE_EVENT0(benchmark_instrumentation::kCategory,
                      benchmark_instrumentation::kRecordLoop);
-        base::TimeDelta total_duration =
-          base::TimeDelta::FromInternalValue(0);
         base::TimeDelta best_duration = base::TimeDelta::FromInternalValue(
             std::numeric_limits<int64>::max());
         for (int i = 0; i < repeat_count; i++) {
           base::TimeTicks start_time = stats_instrumentation->StartRecording();
           (*pic)->Record(painter, tile_grid_info_);
           base::TimeDelta duration =
               stats_instrumentation->EndRecording(start_time);
-          total_duration += duration;
           best_duration = std::min(duration, best_duration);
         }
-        int painted_pixels =
+        int recorded_pixel_count =
             (*pic)->LayerRect().width() * (*pic)->LayerRect().height();
-        stats_instrumentation->AddRecord(total_duration,
-                                         best_duration,
-                                         painted_pixels);
-        (*pic)->GatherPixelRefs(tile_grid_info_, stats_instrumentation);
+        stats_instrumentation->AddRecord(best_duration, recorded_pixel_count);
+        (*pic)->GatherPixelRefs(tile_grid_info_);
         (*pic)->CloneForDrawing(num_raster_threads_);
       }
     }
   }
 
   UpdateRecordedRegion();
 
   return modified_pile;
 }
 
@@ skipping 38 matching lines @@
 
   FullyContainedPredicate pred(picture_rect);
   picture_list.erase(std::remove_if(picture_list.begin(),
                                     picture_list.end(),
                                     pred),
                      picture_list.end());
   picture_list.push_back(Picture::Create(picture_rect));
 }
 
 }  // namespace cc