Revert "Refactor automation messages." due to mysterious problems on mac.

chrome/test/automation/extension_proxy.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/test/automation/extension_proxy.h"
 
 #include "base/string_number_conversions.h"
-#include "chrome/common/automation_messages.h"
+#include "chrome/test/automation/automation_messages.h"
 #include "chrome/test/automation/automation_proxy.h"
 #include "chrome/test/automation/browser_proxy.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 ExtensionProxy::ExtensionProxy(AutomationMessageSender* sender,
                                AutomationHandleTracker* tracker,
                                int handle)
     : AutomationResourceProxy(tracker, sender, handle) {
 }
 
@@ skipping 114 matching lines @@
   DCHECK(value);
   if (!is_valid())
     return false;
 
   bool success = false;
   if (!sender_->Send(new AutomationMsg_GetExtensionProperty(0, handle_, type,
                                                             &success, value)))
     return false;
   return success;
 }