Consolidates accessing and setting the UMA pref to be within metrics code

chrome/browser/chromeos/login/wizard_controller.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_WIZARD_CONTROLLER_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_WIZARD_CONTROLLER_H_
 
 #include <map>
 #include <string>
 
@@ skipping 197 matching lines @@
   void OnKioskAutolaunchCanceled();
   void OnKioskAutolaunchConfirmed();
   void OnKioskEnableCompleted();
   void OnWrongHWIDWarningSkipped();
   void OnAutoEnrollmentCheckCompleted();
   void OnTermsOfServiceDeclined();
   void OnTermsOfServiceAccepted();
   void OnControllerPairingFinished();
   void OnHostPairingFinished();
 
+  // Callback function after setting MetricsReporting.
+  void InitiateMetricsReportingChangeCallback(bool enabled);
+
   // Loads brand code on I/O enabled thread and stores to Local State.
   void LoadBrandCodeFromFile();
 
   // Called after all post-EULA blocking tasks have been completed.
   void OnEulaBlockingTasksDone();
 
   // Shows update screen and starts update process.
   void InitiateOOBEUpdate();
 
   // Actions that should be done right after EULA is accepted,
@@ skipping 167 matching lines @@
   base::Closure on_timezone_resolved_for_testing_;
 
   base::WeakPtrFactory<WizardController> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(WizardController);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_WIZARD_CONTROLLER_H_