[Ozone-DRI] Adding ScanoutBuffer interface

ui/ozone/platform/dri/dri_surface.h

 // Copyright 2014 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 UI_OZONE_PLATFORM_DRI_DRI_SURFACE_H_
 #define UI_OZONE_PLATFORM_DRI_DRI_SURFACE_H_
 
 #include "base/compiler_specific.h"
-#include "base/memory/scoped_ptr.h"
+#include "base/memory/ref_counted.h"
 #include "ui/gfx/geometry/size.h"
 #include "ui/gfx/skia_util.h"
 #include "ui/ozone/platform/dri/scanout_surface.h"
 
 class SkCanvas;
 
 namespace ui {
 
 class DriBuffer;
 class DriWrapper;
@@ skipping 18 matching lines @@
 
  private:
   DriBuffer* frontbuffer() const { return bitmaps_[front_buffer_].get(); }
   DriBuffer* backbuffer() const { return bitmaps_[front_buffer_ ^ 1].get(); }
 
   // Stores the connection to the graphics card. Pointer not owned by this
   // class.
   DriWrapper* dri_;
 
   // The actual buffers used for painting.
-  scoped_ptr<DriBuffer> bitmaps_[2];
+  scoped_refptr<DriBuffer> bitmaps_[2];
 
   // Keeps track of which bitmap is |buffers_| is the frontbuffer.
   int front_buffer_;
 
   // Surface size.
   gfx::Size size_;
 
   DISALLOW_COPY_AND_ASSIGN(DriSurface);
 };
 
 }  // namespace ui
 
 #endif  // UI_OZONE_PLATFORM_DRI_DRI_SURFACE_H_