Revert of ChromeOS: "Add New User" screen should enable all hardware keyboards.

chrome/browser/chromeos/input_method/input_method_persistence.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_INPUT_METHOD_INPUT_METHOD_PERSISTENCE_H_
 #define CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_PERSISTENCE_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "chromeos/ime/input_method_manager.h"
 
-class PrefService;
-
 namespace chromeos {
 namespace input_method {
 
 // Observes input method and session state changes, and persists input method
 // changes to the BrowserProcess local state or to the user preferences,
 // according to the session state.
 class InputMethodPersistence : public InputMethodManager::Observer {
  public:
   // Constructs an instance that will observe input method changes on the
   // provided InputMethodManager. The client is responsible for calling
   // OnSessionStateChange whenever the InputMethodManager::UISessionState
   // changes.
   explicit InputMethodPersistence(InputMethodManager* input_method_manager);
   virtual ~InputMethodPersistence();
 
   // Receives notification of session state changes.
   void OnSessionStateChange(InputMethodManager::UISessionState new_session);
 
   // InputMethodManager::Observer overrides.
   virtual void InputMethodChanged(InputMethodManager* manager,
                                   bool show_message) OVERRIDE;
 
  private:
   InputMethodManager* input_method_manager_;
   InputMethodManager::UISessionState ui_session_;
   DISALLOW_COPY_AND_ASSIGN(InputMethodPersistence);
 };
 
-void SetUserLRUInputMethodPreferenceForTesting(const std::string& username,
-                                               const std::string& input_method,
-                                               PrefService* local_state);
-
 }  // namespace input_method
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_PERSISTENCE_H_