FBTF: Header cleanup in chrome/common part 2. The majority of the changed files

chrome/browser/extensions/extension_message_service.h

 // 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.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_EXTENSION_MESSAGE_SERVICE_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_MESSAGE_SERVICE_H_
 #pragma once
 
 #include <map>
 #include <set>
 #include <string>
 
 #include "base/ref_counted.h"
+#include "chrome/browser/extensions/extension_devtools_manager.h"
+#include "chrome/common/notification_observer.h"
 #include "chrome/common/notification_registrar.h"
-#include "chrome/browser/extensions/extension_devtools_manager.h"
 #include "ipc/ipc_message.h"
 
 class GURL;
 class Profile;
 class TabContents;
 
 // This class manages message and event passing between renderer processes.
 // It maintains a list of processes that are listening to events and a set of
 // open channels.
 //
@@ skipping 154 matching lines @@
 
   // A map between an event name and a set of process id's that are listening
   // to that event.
   typedef std::map<std::string, std::set<int> > ListenerMap;
   ListenerMap listeners_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionMessageService);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_MESSAGE_SERVICE_H_