cc: refactor of MathUtil::AddToTracedValue

cc/resources/picture_layer_tiling.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_layer_tiling.h"
 
 #include <algorithm>
 #include <cmath>
 #include <limits>
 #include <set>
@@ skipping 851 matching lines @@
 
 void PictureLayerTiling::GetAllTilesForTracing(
     std::set<const Tile*>* tiles) const {
   for (TileMap::const_iterator it = tiles_.begin(); it != tiles_.end(); ++it)
     tiles->insert(it->second.get());
 }
 
 void PictureLayerTiling::AsValueInto(base::debug::TracedValue* state) const {
   state->SetInteger("num_tiles", tiles_.size());
   state->SetDouble("content_scale", contents_scale_);
-  state->BeginDictionary("tiling_size");
-  MathUtil::AddToTracedValue(tiling_size(), state);
-  state->EndDictionary();
+  MathUtil::AddToTracedValue("tiling_size", tiling_size(), state);
 }
 
 size_t PictureLayerTiling::GPUMemoryUsageInBytes() const {
   size_t amount = 0;
   for (TileMap::const_iterator it = tiles_.begin(); it != tiles_.end(); ++it) {
     const Tile* tile = it->second.get();
     amount += tile->GPUMemoryUsageInBytes();
   }
   return amount;
 }
@@ skipping 143 matching lines @@
       break;
   }
 
   gfx::Rect result(origin_x, origin_y, width, height);
   if (cache)
     cache->previous_result = result;
   return result;
 }
 
 }  // namespace cc