chrome: Cleanup class/struct forward declarations

chrome/browser/chromeos/mobile/mobile_activator.h

 // Copyright (c) 2012 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_CHROMEOS_MOBILE_MOBILE_ACTIVATOR_H_
 #define CHROME_BROWSER_CHROMEOS_MOBILE_MOBILE_ACTIVATOR_H_
 
 #include <map>
 #include <memory>
 #include <string>
 
 #include "base/files/file_path.h"
 #include "base/macros.h"
 #include "base/memory/singleton.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
 #include "base/timer/timer.h"
 #include "chromeos/network/network_handler_callbacks.h"
 #include "chromeos/network/network_state_handler_observer.h"
 
 namespace base {
 class DictionaryValue;
 }
 
 namespace chromeos {
 
-class NetworkConnectionHandler;
 class NetworkState;
-class NetworkStateHandler;
 class TestMobileActivator;
 
 // Cellular plan config document.
 class CellularConfigDocument
     : public base::RefCountedThreadSafe<CellularConfigDocument> {
  public:
   CellularConfigDocument();
 
   // Return error message for a given code.
   std::string GetErrorMessage(const std::string& code);
@@ skipping 280 matching lines @@
 
   base::ObserverList<Observer> observers_;
   base::WeakPtrFactory<MobileActivator> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MobileActivator);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_MOBILE_MOBILE_ACTIVATOR_H_