Add builders for tracing event's structural arguments

cc/layers/heads_up_display_layer_impl.h

 // 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.
 
 #ifndef CC_LAYERS_HEADS_UP_DISPLAY_LAYER_IMPL_H_
 #define CC_LAYERS_HEADS_UP_DISPLAY_LAYER_IMPL_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 54 matching lines @@
 
     double current_upper_bound;
     const double default_upper_bound;
     const double indicator;
   };
 
   HeadsUpDisplayLayerImpl(LayerTreeImpl* tree_impl, int id);
 
   virtual const char* LayerTypeAsString() const OVERRIDE;
 
-  virtual void AsValueInto(base::DictionaryValue* dict) const OVERRIDE;
+  virtual void AsValueInto(base::debug::TracedValue* dict) const OVERRIDE;
 
   void UpdateHudContents();
   void DrawHudContents(SkCanvas* canvas);
 
   void DrawText(SkCanvas* canvas,
                 SkPaint* paint,
                 const std::string& text,
                 SkPaint::Align align,
                 int size,
                 int x,
@@ skipping 45 matching lines @@
   std::vector<DebugRect> paint_rects_;
 
   base::TimeTicks time_of_last_graph_update_;
 
   DISALLOW_COPY_AND_ASSIGN(HeadsUpDisplayLayerImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_HEADS_UP_DISPLAY_LAYER_IMPL_H_