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      1 // Copyright 2013 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef CC_RESOURCES_SCOPED_UI_RESOURCE_H_
      6 #define CC_RESOURCES_SCOPED_UI_RESOURCE_H_
      7 
      8 #include "base/memory/ref_counted.h"
      9 #include "cc/base/cc_export.h"
     10 #include "cc/resources/ui_resource_bitmap.h"
     11 #include "cc/resources/ui_resource_client.h"
     12 #include "ui/gfx/size.h"
     13 
     14 namespace cc {
     15 
     16 class LayerTreeHost;
     17 
     18 class CC_EXPORT ScopedUIResource : public UIResourceClient {
     19  public:
     20   static scoped_ptr<ScopedUIResource> Create(
     21       LayerTreeHost* host,
     22       scoped_refptr<UIResourceBitmap> bitmap);
     23   virtual ~ScopedUIResource();
     24 
     25   virtual scoped_refptr<UIResourceBitmap> GetBitmap(
     26       UIResourceId uid,
     27       bool resource_lost) OVERRIDE;
     28   UIResourceId id() { return id_; }
     29 
     30  protected:
     31   ScopedUIResource(LayerTreeHost* host, scoped_refptr<UIResourceBitmap> bitmap);
     32 
     33   // An empty default contructor for testing.
     34   ScopedUIResource();
     35 
     36   scoped_refptr<UIResourceBitmap> bitmap_;
     37   LayerTreeHost* host_;
     38   UIResourceId id_;
     39 
     40  private:
     41   DISALLOW_COPY_AND_ASSIGN(ScopedUIResource);
     42 };
     43 
     44 }  // namespace cc
     45 
     46 #endif  // CC_RESOURCES_SCOPED_UI_RESOURCE_H_
     47