Use ICU plural syntax in more place

chrome/browser/ui/cocoa/history_menu_bridge.mm

 // 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/ui/cocoa/history_menu_bridge.h"
 
 #include "base/bind.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/strings/sys_string_conversions.h"
@@ skipping 167 matching lines @@
         HistoryItem* tab_item = HistoryItemForTab(tab);
         if (tab_item) {
           item->tabs.push_back(tab_item);
           AddItemToMenu(tab_item, submenu.get(), kRecentlyClosed + 1,
                         subindex++);
         }
       }
 
       // Now that the number of tabs that has been added is known, set the title
       // of the parent menu item.
-      if (item->tabs.size() == 1) {
-        item->title = l10n_util::GetStringUTF16(
-            IDS_NEW_TAB_RECENTLY_CLOSED_WINDOW_SINGLE);
-      } else {
-        item->title =l10n_util::GetStringFUTF16(
-            IDS_NEW_TAB_RECENTLY_CLOSED_WINDOW_MULTIPLE,
-                base::IntToString16(item->tabs.size()));
-      }
+      item->title =l10n_util::GetPluralStringFUTF16(
+          IDS_NEW_TAB_RECENTLY_CLOSED_WINDOW, item->tabs.size());
 
       // Sometimes it is possible for there to not be any subitems for a given
       // window; if that is the case, do not add the entry to the main menu.
       if ([[submenu itemArray] count] > 2) {
         // Create the menu item parent.
         NSMenuItem* parent_item =
             AddItemToMenu(item, menu, kRecentlyClosed, index++);
         [parent_item setSubmenu:submenu.get()];
         ++added_count;
       }
@@ skipping 246 matching lines @@
                                       const history::URLRows& deleted_rows,
                                       const std::set<GURL>& favicon_urls) {
   OnHistoryChanged();
 }
 
 void HistoryMenuBridge::OnHistoryServiceLoaded(
     history::HistoryService* history_service) {
   history_service_ = history_service;
   Init();
 }