[Cleanup] Remove StringPrintf from global namespace

ash/system/web_notification/web_notification_tray_unittest.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 "ash/system/web_notification/web_notification_tray.h"
 
 #include <vector>
 
 #include "ash/root_window_controller.h"
 #include "ash/shelf/shelf_widget.h"
@@ skipping 178 matching lines @@
 
 
 TEST_F(WebNotificationTrayTest, ManyMessageCenterNotifications) {
   WebNotificationTray* tray = GetWebNotificationTray();
   scoped_ptr<TestDelegate> delegate(new TestDelegate(get_message_center()));
 
   // Add the max visible notifications +1, ensure the correct visible number.
   size_t notifications_to_add =
       NotificationList::kMaxVisibleMessageCenterNotifications + 1;
   for (size_t i = 0; i < notifications_to_add; ++i) {
-    std::string id = StringPrintf("test_id%d", static_cast<int>(i));
+    std::string id = base::StringPrintf("test_id%d", static_cast<int>(i));
     delegate->AddNotification(tray, id);
   }
   bool shown = tray->message_center_tray_->ShowMessageCenterBubble();
   EXPECT_TRUE(shown);
   RunAllPendingInMessageLoop();
   EXPECT_TRUE(tray->message_center_bubble() != NULL);
   EXPECT_EQ(notifications_to_add,
             get_message_center()->NotificationCount());
   EXPECT_EQ(NotificationList::kMaxVisibleMessageCenterNotifications,
             tray->GetMessageCenterBubbleForTest()->NumMessageViewsForTest());
 }
 
 TEST_F(WebNotificationTrayTest, ManyPopupNotifications) {
   WebNotificationTray* tray = GetWebNotificationTray();
   scoped_ptr<TestDelegate> delegate(new TestDelegate(get_message_center()));
 
   // Add the max visible popup notifications +1, ensure the correct num visible.
   size_t notifications_to_add =
       NotificationList::kMaxVisiblePopupNotifications + 1;
   for (size_t i = 0; i < notifications_to_add; ++i) {
-    std::string id = StringPrintf("test_id%d", static_cast<int>(i));
+    std::string id = base::StringPrintf("test_id%d", static_cast<int>(i));
     delegate->AddNotification(tray, id);
   }
   // Hide and reshow the bubble so that it is updated immediately, not delayed.
   tray->SetHidePopupBubble(true);
   tray->SetHidePopupBubble(false);
   EXPECT_TRUE(tray->IsPopupVisible());
   EXPECT_EQ(notifications_to_add,
             get_message_center()->NotificationCount());
   if (message_center::IsRichNotificationEnabled()) {
     NotificationList::PopupNotifications popups =
         get_message_center()->notification_list()->GetPopupNotifications();
     EXPECT_EQ(NotificationList::kMaxVisiblePopupNotifications, popups.size());
   } else {
     EXPECT_EQ(NotificationList::kMaxVisiblePopupNotifications,
               tray->GetPopupBubbleForTest()->NumMessageViewsForTest());
   }
   get_message_center()->SetDelegate(NULL);
   get_message_center()->notification_list()->RemoveAllNotifications();
 }
 
 }  // namespace ash