Reduce FOR_EACH_OBSERVER macro usage in chrome/browser

chrome/browser/background/background_application_list_model.cc

 // 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.
 
 #include "chrome/browser/background/background_application_list_model.h"
 
 #include <algorithm>
 #include <set>
 
 #include "base/memory/ptr_util.h"
@@ skipping 312 matching lines @@
     case chrome::NOTIFICATION_BACKGROUND_CONTENTS_SERVICE_CHANGED:
       Update();
       break;
     default:
       NOTREACHED() << "Received unexpected notification";
   }
 }
 
 void BackgroundApplicationListModel::SendApplicationDataChangedNotifications(
     const Extension* extension) {
-  FOR_EACH_OBSERVER(Observer, observers_, OnApplicationDataChanged(extension,
-                                                                   profile_));
+  for (auto& observer : observers_)
+    observer.OnApplicationDataChanged(extension, profile_);
 }
 
 void BackgroundApplicationListModel::OnExtensionLoaded(
     const Extension* extension) {
   // We only care about extensions that are background applications
   if (!IsBackgroundApp(*extension, profile_))
     return;
   AssociateApplicationData(extension);
 }
 
@@ skipping 46 matching lines @@
   ExtensionList::const_iterator new_cursor = extensions.begin();
   while (old_cursor != extensions_.end() &&
          new_cursor != extensions.end() &&
          (*old_cursor)->name() == (*new_cursor)->name() &&
          (*old_cursor)->id() == (*new_cursor)->id()) {
     ++old_cursor;
     ++new_cursor;
   }
   if (old_cursor != extensions_.end() || new_cursor != extensions.end()) {
     extensions_ = extensions;
-    FOR_EACH_OBSERVER(Observer, observers_, OnApplicationListChanged(profile_));
+    for (auto& observer : observers_)
+      observer.OnApplicationListChanged(profile_);
   }
 }