Cache image data objects.

webkit/plugins/ppapi/ppb_graphics_2d_impl.h

 // Copyright (c) 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 WEBKIT_PLUGINS_PPAPI_PPB_GRAPHICS_2D_IMPL_H_
 #define WEBKIT_PLUGINS_PPAPI_PPB_GRAPHICS_2D_IMPL_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 33 matching lines @@
   virtual void LastPluginRefWasDeleted() OVERRIDE;
 
   // PPB_Graphics2D functions.
   virtual PP_Bool Describe(PP_Size* size, PP_Bool* is_always_opaque) OVERRIDE;
   virtual void PaintImageData(PP_Resource image_data,
                               const PP_Point* top_left,
                               const PP_Rect* src_rect) OVERRIDE;
   virtual void Scroll(const PP_Rect* clip_rect,
                       const PP_Point* amount) OVERRIDE;
   virtual void ReplaceContents(PP_Resource image_data) OVERRIDE;
-  virtual int32_t Flush(
-      scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
   virtual bool SetScale(float scale) OVERRIDE;
   virtual float GetScale() OVERRIDE;
+  virtual int32_t Flush(
+      scoped_refptr< ::ppapi::TrackedCallback> callback,
+      PP_Resource* old_image_data) OVERRIDE;
 
   bool ReadImageData(PP_Resource image, const PP_Point* top_left);
 
   // Assciates this device with the given plugin instance. You can pass NULL to
   // clear the existing device. Returns true on success. In this case, a
   // repaint of the page will also be scheduled. Failure means that the device
   // is already bound to a different instance, and nothing will happen.
   bool BindToInstance(PluginInstance* new_instance);
 
   // Paints the current backing store to the web page.
@@ skipping 67 matching lines @@
   // rect argument will be filled by each function with the area affected by
   // the update that requires invalidation. If there were no pixels changed,
   // this rect can be untouched.
   void ExecutePaintImageData(PPB_ImageData_Impl* image,
                              int x, int y,
                              const gfx::Rect& src_rect,
                              gfx::Rect* invalidated_rect);
   void ExecuteScroll(const gfx::Rect& clip, int dx, int dy,
                      gfx::Rect* invalidated_rect);
   void ExecuteReplaceContents(PPB_ImageData_Impl* image,
-                              gfx::Rect* invalidated_rect);
+                              gfx::Rect* invalidated_rect,
+                              PP_Resource* old_image_data);
 
   // Schedules the offscreen callback to be fired at a future time. This
   // will add the given item to the offscreen_flush_callbacks_ vector.
   void ScheduleOffscreenCallback(const FlushCallbackData& callback);
 
   // Function scheduled to execute by ScheduleOffscreenCallback that actually
   // issues the offscreen callbacks.
   void ExecuteOffscreenCallback(FlushCallbackData data);
 
   // Returns true if there is any type of flush callback pending.
@@ skipping 48 matching lines @@
 
   base::WeakPtrFactory<PPB_Graphics2D_Impl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PPB_Graphics2D_Impl);
 };
 
 }  // namespace ppapi
 }  // namespace webkit
 
 #endif  // WEBKIT_PLUGINS_PPAPI_PPB_GRAPHICS_2D_IMPL_H_