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

chrome/browser/plugin_process_host.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_BROWSER_PLUGIN_PROCESS_HOST_H_
 #define CHROME_BROWSER_PLUGIN_PROCESS_HOST_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 93 matching lines @@
                          const ViewHostMsg_Resource_Request& request);
   void OnCancelRequest(int request_id);
   void OnDataReceivedACK(int request_id);
   void OnUploadProgressACK(int request_id);
   void OnSyncLoad(int request_id,
                   const ViewHostMsg_Resource_Request& request,
                   IPC::Message* sync_result);
   void OnGetCookies(uint32 request_context, const GURL& url,
                     std::string* cookies);
   void OnResolveProxy(const GURL& url, IPC::Message* reply_msg);
-
   void OnPluginShutdownRequest();
   void OnPluginMessage(const std::vector<uint8>& data);
   void OnGetPluginDataDir(std::wstring* retval);
+  void OnCreateWindow(HWND parent, IPC::Message* reply_msg);
+  void OnDestroyWindow(HWND window);
 
   struct ChannelRequest {
     ChannelRequest(ResourceMessageFilter* renderer_message_filter,
                     const std::string& m, IPC::Message* r) :
         renderer_message_filter_(renderer_message_filter), mime_type(m),
         reply_msg(r) { }
     std::string mime_type;
     IPC::Message* reply_msg;
     scoped_refptr<ResourceMessageFilter> renderer_message_filter_;
   };
@@ skipping 32 matching lines @@
   // This RevocableStore prevents ResolveProxy completion callbacks from
   // accessing a deleted PluginProcessHost (since we do not cancel the
   // in-progress resolve requests during destruction).
   RevocableStore revocable_store_;
 
   DISALLOW_EVIL_CONSTRUCTORS(PluginProcessHost);
 };
 
 #endif  // CHROME_BROWSER_PLUGIN_PROCESS_HOST_H_