Use ICU plural syntax in more place

chrome/browser/ui/webui/ntp/ntp_resource_cache.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/ui/webui/ntp/ntp_resource_cache.h"
 
 #include <string>
 #include <vector>
 
 #include "base/command_line.h"
@@ skipping 416 matching lines @@
   load_time_data.SetString("suggestions",
       l10n_util::GetStringUTF16(IDS_NEW_TAB_SUGGESTIONS));
   load_time_data.SetString("restoreThumbnailsShort",
       l10n_util::GetStringUTF16(IDS_NEW_TAB_RESTORE_THUMBNAILS_SHORT_LINK));
   load_time_data.SetString("recentlyclosed",
       l10n_util::GetStringUTF16(IDS_NEW_TAB_RECENTLY_CLOSED));
   load_time_data.SetString("webStoreTitle",
       l10n_util::GetStringUTF16(IDS_EXTENSION_WEB_STORE_TITLE));
   load_time_data.SetString("webStoreTitleShort",
       l10n_util::GetStringUTF16(IDS_EXTENSION_WEB_STORE_TITLE_SHORT));
-  load_time_data.SetString("closedwindowsingle",
-      l10n_util::GetStringUTF16(IDS_NEW_TAB_RECENTLY_CLOSED_WINDOW_SINGLE));
-  load_time_data.SetString("closedwindowmultiple",
-      l10n_util::GetStringUTF16(IDS_NEW_TAB_RECENTLY_CLOSED_WINDOW_MULTIPLE));
   load_time_data.SetString("attributionintro",
       l10n_util::GetStringUTF16(IDS_NEW_TAB_ATTRIBUTION_INTRO));
   load_time_data.SetString("thumbnailremovednotification",
       l10n_util::GetStringUTF16(IDS_NEW_TAB_THUMBNAIL_REMOVED_NOTIFICATION));
   load_time_data.SetString("undothumbnailremove",
       l10n_util::GetStringUTF16(IDS_NEW_TAB_UNDO_THUMBNAIL_REMOVE));
   load_time_data.SetString("removethumbnailtooltip",
       l10n_util::GetStringUTF16(IDS_NEW_TAB_REMOVE_THUMBNAIL_TOOLTIP));
   load_time_data.SetString("appuninstall",
       l10n_util::GetStringUTF16(IDS_EXTENSIONS_UNINSTALL));
@@ skipping 281 matching lines @@
   // Get our template.
   static const base::StringPiece new_tab_theme_css(
       ResourceBundle::GetSharedInstance().GetRawDataResource(
           IDR_NEW_TAB_4_THEME_CSS));
 
   // Create the string from our template and the replacements.
   std::string css_string;
   css_string = ReplaceStringPlaceholders(new_tab_theme_css, subst, NULL);
   new_tab_css_ = base::RefCountedString::TakeString(&css_string);
 }