ui: use base's ContainsValue helper function instead of std::find

ui/message_center/message_center_impl.cc

 // Copyright (c) 2013 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 "ui/message_center/message_center_impl.h"
 
 #include <algorithm>
 #include <deque>
 
 #include "base/command_line.h"
 #include "base/memory/scoped_vector.h"
 #include "base/observer_list.h"
+#include "base/stl_util.h"
 #include "ui/message_center/message_center_style.h"
 #include "ui/message_center/message_center_switches.h"
 #include "ui/message_center/message_center_types.h"
 #include "ui/message_center/notification.h"
 #include "ui/message_center/notification_blocker.h"
 #include "ui/message_center/notification_list.h"
 #include "ui/message_center/notification_types.h"
 #include "ui/message_center/popup_timer.h"
 
 namespace message_center {
@@ skipping 351 matching lines @@
 
 void MessageCenterImpl::AddObserver(MessageCenterObserver* observer) {
   observer_list_.AddObserver(observer);
 }
 
 void MessageCenterImpl::RemoveObserver(MessageCenterObserver* observer) {
   observer_list_.RemoveObserver(observer);
 }
 
 void MessageCenterImpl::AddNotificationBlocker(NotificationBlocker* blocker) {
-  if (std::find(blockers_.begin(), blockers_.end(), blocker) !=
-      blockers_.end()) {
+  if (ContainsValue(blockers_, blocker))
     return;
-  }
+
   blocker->AddObserver(this);
   blockers_.push_back(blocker);
 }
 
 void MessageCenterImpl::RemoveNotificationBlocker(
     NotificationBlocker* blocker) {
   std::vector<NotificationBlocker*>::iterator iter =
       std::find(blockers_.begin(), blockers_.end(), blocker);
   if (iter == blockers_.end())
     return;
@@ skipping 489 matching lines @@
 }
 
 void MessageCenterImpl::EnableChangeQueueForTest(bool enable) {
   if (enable)
     notification_queue_.reset(new internal::ChangeQueue());
   else
     notification_queue_.reset();
 }
 
 }  // namespace message_center