Fix Silverlight windowless plugin painting issues. This fixes the following...

chrome/plugin/webplugin_proxy.h

 // Copyright (c) 2006-2008 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 CHROME_PLUGIN_PLUGIN_WEBPLUGIN_PROXY_H__
 #define CHROME_PLUGIN_PLUGIN_WEBPLUGIN_PROXY_H__
 
 #include "base/hash_tables.h"
 #include "base/ref_counted.h"
 #include "base/scoped_handle.h"
@@ skipping 90 matching lines @@
   void SetWindowlessBuffer(const base::SharedMemoryHandle& windowless_buffer,
                            const base::SharedMemoryHandle& background_buffer);
 
   // Converts a shared memory section handle from the renderer process into a
   // bitmap and hdc that are mapped to this process.
   void ConvertBuffer(const base::SharedMemoryHandle& buffer,
                      ScopedHandle* shared_section,
                      ScopedBitmap* bitmap,
                      ScopedHDC* hdc);
 
+  // Handler for sending over the paint event to the plugin.
+  void OnPaint(const gfx::Rect& damaged_rect);
+
   // Called when a plugin's origin moves, so that we can update the world
   // transform of the local HDC.
   void UpdateTransform();
 
   typedef base::hash_map<int, WebPluginResourceClient*> ResourceClientMap;
   ResourceClientMap resource_clients_;
 
   scoped_refptr<PluginChannel> channel_;
   int route_id_;
   NPObject* window_npobject_;
   NPObject* plugin_element_;
   WebPluginDelegateImpl* delegate_;
   gfx::Rect damaged_rect_;
   bool waiting_for_paint_;
   uint32 cp_browsing_context_;
   ScopedHandle modal_dialog_event_;
 
   // Variables used for desynchronized windowless plugin painting.  See note in
   // webplugin_delegate_proxy.h for how this works.
 
   // These hold the bitmap where the plugin draws.
   ScopedHandle windowless_shared_section_;
   ScopedBitmap windowless_bitmap_;
   ScopedHDC windowless_hdc_;
 
   // These hold the bitmap of the background image.
   ScopedHandle background_shared_section_;
   ScopedBitmap background_bitmap_;
   ScopedHDC background_hdc_;
+
+  ScopedRunnableMethodFactory<WebPluginProxy> runnable_method_factory_;
 };
 
 #endif  // CHROME_PLUGIN_PLUGIN_WEBPLUGIN_PROXY_H__