cros: Tighten profile loading

chrome/browser/chromeos/system/system_clock.h

 // Copyright 2015 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_SYSTEM_SYSTEM_CLOCK_H_
 #define CHROME_BROWSER_CHROMEOS_SYSTEM_SYSTEM_CLOCK_H_
 
 #include <memory>
 
 #include "base/callback_list.h"
@@ skipping 35 matching lines @@
   void RemoveObserver(SystemClockObserver* observer);
 
   bool ShouldUse24HourClock() const;
 
   // content::NotificationObserver implementation.
   void Observe(int type,
                const content::NotificationSource& source,
                const content::NotificationDetails& details) override;
 
   // user_manager::UserManager::UserSessionStateObserver overrides
-  void ActiveUserChanged(const user_manager::User* user) override;
+  void ActiveUserChanged(const user_manager::User* active_user) override;
 
  private:
   // Should be the same as CrosSettings::ObserverSubscription.
   typedef base::CallbackList<void(void)>::Subscription
       CrosSettingsObserverSubscription;
 
   void OnActiveProfileChanged(Profile* profile);
   bool OnProfileDestroyed(Profile* profile);
 
   // LoginState::Observer overrides.
@@ skipping 14 matching lines @@
 
   std::unique_ptr<CrosSettingsObserverSubscription> device_settings_observer_;
 
   DISALLOW_COPY_AND_ASSIGN(SystemClock);
 };
 
 }  // namespace system
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_SYSTEM_SYSTEM_CLOCK_H_