Add builders for tracing event's structural arguments

cc/layers/tiled_layer_impl.h

 // Copyright 2011 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_LAYERS_TILED_LAYER_IMPL_H_
 #define CC_LAYERS_TILED_LAYER_IMPL_H_
 
 #include <string>
 
 #include "cc/base/cc_export.h"
@@ skipping 40 matching lines @@
   virtual size_t GPUMemoryUsageInBytes() const OVERRIDE;
 
  protected:
   TiledLayerImpl(LayerTreeImpl* tree_impl, int id);
   // Exposed for testing.
   bool HasTileAt(int i, int j) const;
   bool HasResourceIdForTileAt(int i, int j) const;
 
   virtual void GetDebugBorderProperties(SkColor* color, float* width) const
       OVERRIDE;
-  virtual void AsValueInto(base::DictionaryValue* state) const OVERRIDE;
+  virtual void AsValueInto(base::debug::TracedValue* dict) const OVERRIDE;
 
  private:
   virtual const char* LayerTypeAsString() const OVERRIDE;
 
   DrawableTile* TileAt(int i, int j) const;
   DrawableTile* CreateTile(int i, int j);
 
   bool skips_draw_;
 
   scoped_ptr<LayerTilingData> tiler_;
 
   DISALLOW_COPY_AND_ASSIGN(TiledLayerImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_TILED_LAYER_IMPL_H_