Improve scrolling performance when there are many windowed plugins in a page....

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 63 matching lines @@
 
   void HandleURLRequest(const char *method,
                         bool is_javascript_url,
                         const char* target, unsigned int len,
                         const char* buf, bool is_file_data,
                         bool notify, const char* url,
                         void* notify_data, bool popups_allowed);
 
   void UpdateGeometry(const gfx::Rect& window_rect,
                       const gfx::Rect& clip_rect,
-                      const std::vector<gfx::Rect>& cutout_rects,
-                      bool visible,
                       const base::SharedMemoryHandle& windowless_buffer,
                       const base::SharedMemoryHandle& background_buffer);
 
   void CancelDocumentLoad();
 
   void InitiateHTTPRangeRequest(const char* url,
                                 const char* range_info,
                                 void* existing_stream,
                                 bool notify_needed,
                                 HANDLE notify_data);
@@ skipping 24 matching lines @@
 
   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_;
+  HWND parent_window_;
 
   // 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__