Remove FOR_EACH_OBSERVER macro usage in chrome/browser/supervised_user

chrome/browser/supervised_user/supervised_user_pref_store.cc

 // Copyright 2014 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.
 
 #include "chrome/browser/supervised_user/supervised_user_pref_store.h"
 
 #include <utility>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 148 matching lines @@
     if (base::CommandLine::ForCurrentProcess()->HasSwitch(
             switches::kEnableSupervisedUserManagedBookmarksFolder)) {
       // Reconstruct bookmarks from split settings.
       prefs_->SetValue(
           bookmarks::prefs::kSupervisedBookmarks,
           SupervisedUserBookmarksHandler::BuildBookmarksTree(*settings));
     }
   }
 
   if (!old_prefs) {
-    FOR_EACH_OBSERVER(Observer, observers_, OnInitializationCompleted(true));
+    for (Observer& observer : observers_)
+      observer.OnInitializationCompleted(true);
     return;
   }
 
   std::vector<std::string> changed_prefs;
   prefs_->GetDifferingKeys(old_prefs.get(), &changed_prefs);
 
   // Send out change notifications.
   for (const std::string& pref : changed_prefs) {
-    FOR_EACH_OBSERVER(Observer, observers_, OnPrefValueChanged(pref));
+    for (Observer& observer : observers_)
+      observer.OnPrefValueChanged(pref);
   }
 }
 
 // Callback to unsubscribe from the supervised user settings service.
 void SupervisedUserPrefStore::Observe(
     int type,
     const content::NotificationSource& src,
     const content::NotificationDetails& details) {
   DCHECK_EQ(chrome::NOTIFICATION_PROFILE_DESTROYED, type);
   user_settings_subscription_.reset();
 }