Simplify the magic required to create IPC message headers a bit.

chrome/browser/automation/automation_provider.cc

 // Copyright (c) 2010 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.
 
 #include "chrome/browser/automation/automation_provider.h"
 
 #include <set>
 
 #include "app/message_box_flags.h"
 #include "base/callback.h"
@@ skipping 348 matching lines @@
   if (initial_loads_complete_)
     Send(new AutomationMsg_InitialLoadsComplete(0));
 }
 
 void AutomationProvider::OnMessageReceived(const IPC::Message& message) {
   IPC_BEGIN_MESSAGE_MAP(AutomationProvider, message)
 #if !defined(OS_MACOSX)
     IPC_MESSAGE_HANDLER_DELAY_REPLY(AutomationMsg_WindowDrag,
                                     WindowSimulateDrag)
 #endif  // !defined(OS_MACOSX)
-#if defined(OS_WIN)
-    IPC_MESSAGE_HANDLER(AutomationMsg_TabHWND, GetTabHWND)
-#endif  // defined(OS_WIN)
     IPC_MESSAGE_HANDLER(AutomationMsg_HandleUnused, HandleUnused)
     IPC_MESSAGE_HANDLER(AutomationMsg_SetProxyConfig, SetProxyConfig);
     IPC_MESSAGE_HANDLER(AutomationMsg_PrintAsync, PrintAsync)
     IPC_MESSAGE_HANDLER_DELAY_REPLY(AutomationMsg_Find, HandleFindRequest)
     IPC_MESSAGE_HANDLER(AutomationMsg_OverrideEncoding, OverrideEncoding)
     IPC_MESSAGE_HANDLER(AutomationMsg_SelectAll, SelectAll)
     IPC_MESSAGE_HANDLER(AutomationMsg_Cut, Cut)
     IPC_MESSAGE_HANDLER(AutomationMsg_Copy, Copy)
     IPC_MESSAGE_HANDLER(AutomationMsg_Paste, Paste)
     IPC_MESSAGE_HANDLER(AutomationMsg_ReloadAsync, ReloadAsync)
@@ skipping 635 matching lines @@
     }
   }
 }
 
 void AutomationProvider::SaveAsAsync(int tab_handle) {
   NavigationController* tab = NULL;
   TabContents* tab_contents = GetTabContentsForHandle(tab_handle, &tab);
   if (tab_contents)
     tab_contents->OnSavePage();
 }