[Ozone-DRI] Migrate cursor to using ScanoutBuffer

ui/ozone/platform/dri/dri_surface_factory.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_FACTORY_H_
 #define UI_OZONE_PLATFORM_DRI_DRI_SURFACE_FACTORY_H_
 
 #include <map>
 
 #include "base/memory/scoped_ptr.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/ozone/platform/dri/hardware_cursor_delegate.h"
 #include "ui/ozone/public/surface_factory_ozone.h"
 
 namespace ui {
 
-class DriSurface;
+class DriBuffer;
 class DriWrapper;
 class HardwareDisplayController;
 class ScreenManager;
 class SurfaceOzoneCanvas;
 
 // SurfaceFactoryOzone implementation on top of DRM/KMS using dumb buffers.
 // This implementation is used in conjunction with the software rendering
 // path.
 class DriSurfaceFactory : public ui::SurfaceFactoryOzone,
                           public HardwareCursorDelegate {
@@ skipping 22 matching lines @@
   virtual void SetHardwareCursor(gfx::AcceleratedWidget window,
                                  const SkBitmap& image,
                                  const gfx::Point& location) OVERRIDE;
   virtual void MoveHardwareCursor(gfx::AcceleratedWidget window,
                                   const gfx::Point& location) OVERRIDE;
 
  protected:
   // Draw the last set cursor & update the cursor plane.
   void ResetCursor(gfx::AcceleratedWidget w);
 
-  virtual DriSurface* CreateSurface(const gfx::Size& size);
-
   DriWrapper* drm_;  // Not owned.
   ScreenManager* screen_manager_;  // Not owned.
   HardwareState state_;
 
   // Active outputs.
   int allocated_widgets_;
 
-  scoped_ptr<DriSurface> cursor_surface_;
+  scoped_refptr<DriBuffer> cursor_buffers_[2];
+  int cursor_frontbuffer_;
 
   SkBitmap cursor_bitmap_;
   gfx::Point cursor_location_;
 
   DISALLOW_COPY_AND_ASSIGN(DriSurfaceFactory);
 };
 
 }  // namespace ui
 
 #endif  // UI_OZONE_PLATFORM_DRI_DRI_SURFACE_FACTORY_H_