cc: prevent TileManager raster/eviction tile iterators copy.

cc/resources/tile_manager.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_MANAGER_H_
 #define CC_RESOURCES_TILE_MANAGER_H_
 
 #include <deque>
 #include <queue>
 #include <set>
@@ skipping 84 matching lines @@
                       PairedPictureLayerIterator* b) const;
 
      private:
       TreePriority tree_priority_;
     };
 
     std::vector<PairedPictureLayerIterator> paired_iterators_;
     std::vector<PairedPictureLayerIterator*> iterator_heap_;
     TreePriority tree_priority_;
     RasterOrderComparator comparator_;
+
+    DISALLOW_COPY_AND_ASSIGN(RasterTileIterator);
   };
 
   struct CC_EXPORT EvictionTileIterator {
    public:
     EvictionTileIterator();
     EvictionTileIterator(TileManager* tile_manager, TreePriority tree_priority);
     ~EvictionTileIterator();
 
     EvictionTileIterator& operator++();
     operator bool() const;
@@ skipping 24 matching lines @@
                       PairedPictureLayerIterator* b) const;
 
      private:
       TreePriority tree_priority_;
     };
 
     std::vector<PairedPictureLayerIterator> paired_iterators_;
     std::vector<PairedPictureLayerIterator*> iterator_heap_;
     TreePriority tree_priority_;
     EvictionOrderComparator comparator_;
+
+    DISALLOW_COPY_AND_ASSIGN(EvictionTileIterator);
   };
 
   static scoped_ptr<TileManager> Create(
       TileManagerClient* client,
       ResourcePool* resource_pool,
       Rasterizer* rasterizer,
       Rasterizer* gpu_rasterizer,
       size_t max_raster_usage_bytes,
       bool use_rasterize_on_demand,
       RenderingStatsInstrumentation* rendering_stats_instrumentation);
@@ skipping 180 matching lines @@
   std::vector<scoped_refptr<RasterTask> > orphan_raster_tasks_;
 
   std::vector<PictureLayerImpl*> layers_;
 
   DISALLOW_COPY_AND_ASSIGN(TileManager);
 };
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_TILE_MANAGER_H_