Update some uses of Value in chrome/browser to use the base:: namespace.

chrome/browser/chromeos/login/login_display_host.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_LOGIN_LOGIN_DISPLAY_HOST_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_LOGIN_DISPLAY_HOST_H_
 
 #include <string>
 
 #include "base/callback.h"
@@ skipping 63 matching lines @@
   // |callback| is invoked synchronously before this call returns.
   virtual void GetAutoEnrollmentCheckResult(
       const GetAutoEnrollmentCheckResultCallback& callback) = 0;
 
   // Starts out-of-box-experience flow or shows other screen handled by
   // Wizard controller i.e. camera, recovery.
   // One could specify start screen with |first_screen_name|.
   // Takes ownership of |screen_parameters|, which can also be NULL.
   virtual void StartWizard(
       const std::string& first_screen_name,
-      scoped_ptr<DictionaryValue> screen_parameters) = 0;
+      scoped_ptr<base::DictionaryValue> screen_parameters) = 0;
 
   // Returns current WizardController, if it exists.
   // Result should not be stored.
   virtual WizardController* GetWizardController() = 0;
 
   // Returns current AppLaunchController, if it exists.
   // Result should not be stored.
   virtual AppLaunchController* GetAppLaunchController() = 0;
 
   // Starts screen for adding user into session.
@@ skipping 13 matching lines @@
   // Initiates authentication network prewarming.
   virtual void PrewarmAuthentication() = 0;
 
   // Starts app launch splash screen.
   virtual void StartAppLaunch(const std::string& app_id) = 0;
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_LOGIN_DISPLAY_HOST_H_