Add builders for tracing event's structural arguments

cc/resources/tile.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_RESOURCES_TILE_H_
 #define CC_RESOURCES_TILE_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
@@ skipping 85 matching lines @@
   }
 
   bool HasResources() const {
     for (int mode = 0; mode < NUM_RASTER_MODES; ++mode) {
       if (managed_state_.tile_versions[mode].has_resource())
         return true;
     }
     return false;
   }
 
-  scoped_ptr<base::Value> AsValue() const;
+  void AsValueInto(base::debug::TracedValue* dict) const;
 
   inline bool IsReadyToDraw() const {
     for (int mode = 0; mode < NUM_RASTER_MODES; ++mode) {
       if (managed_state_.tile_versions[mode].IsReadyToDraw())
         return true;
     }
     return false;
   }
 
   const ManagedTileState::TileVersion& GetTileVersionForDrawing() const {
@@ skipping 73 matching lines @@
 
   Id id_;
   static Id s_next_id_;
 
   DISALLOW_COPY_AND_ASSIGN(Tile);
 };
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_TILE_H_