Remove usage of FOR_EACH_OBSERVER macro in ios/

ios/net/cookies/cookie_store_ios.mm

 // Copyright 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 "ios/net/cookies/cookie_store_ios.h"
 
 #import <Foundation/Foundation.h>
 #include <stddef.h>
 
 #include "base/bind.h"
@@ skipping 69 matching lines @@
 
 void NotificationTrampoline::AddObserver(CookieNotificationObserver* obs) {
   observer_list_.AddObserver(obs);
 }
 
 void NotificationTrampoline::RemoveObserver(CookieNotificationObserver* obs) {
   observer_list_.RemoveObserver(obs);
 }
 
 void NotificationTrampoline::NotifyCookiesChanged() {
-  FOR_EACH_OBSERVER(CookieNotificationObserver, observer_list_,
-                    OnSystemCookiesChanged());
+  for (auto& observer : observer_list_)
+    observer.OnSystemCookiesChanged();
 }
 
 void NotificationTrampoline::NotifyCookiePolicyChanged() {
-  FOR_EACH_OBSERVER(CookieNotificationObserver, observer_list_,
-                    OnSystemCookiePolicyChanged());
+  for (auto& observer : observer_list_)
+    observer.OnSystemCookiePolicyChanged();
 }
 
 NotificationTrampoline::NotificationTrampoline() {
 }
 
 NotificationTrampoline::~NotificationTrampoline() {
 }
 
 // Global instance of NotificationTrampoline.
 NotificationTrampoline* NotificationTrampoline::g_notification_trampoline =
@@ skipping 1051 matching lines @@
                     weak_factory_.GetWeakPtr(), callback);
 }
 
 base::Closure CookieStoreIOS::WrapClosure(const base::Closure& callback) {
   DCHECK(thread_checker_.CalledOnValidThread());
   return base::Bind(&CookieStoreIOS::UpdateCachesAfterClosure,
                     weak_factory_.GetWeakPtr(), callback);
 }
 
 }  // namespace net