Allow the tiling of theme background images on the NTP....

chrome/browser/dom_ui/dom_ui_theme_source.h

 // Copyright (c) 2009 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.
 
 #ifndef CHROME_BROWSER_DOM_UI_DOM_UI_THEME_SOURCE_H_
 #define CHROME_BROWSER_DOM_UI_DOM_UI_THEME_SOURCE_H_
 
 #include <string>
 
 #include "chrome/browser/dom_ui/chrome_url_data_manager.h"
@@ skipping 17 matching lines @@
   // Generate and send the CSS for the new tab.
   void SendNewTabCSS(int request_id);
 
   // Fetch and send the theme bitmap.
   void SendThemeBitmap(int request_id, int resource_id);
 
   // Get the CSS string for the background position on the new tab page for the
   // states when the bar is attached or detached.
   std::string GetNewTabBackgroundCSS(bool bar_attached);
 
+  // How the background image on the new tab page should be tiled (see tiling
+  // masks in browser_theme_provider.h).
+  std::string GetNewTabBackgroundTilingCSS();
+
   Profile* profile_;
   DISALLOW_COPY_AND_ASSIGN(DOMUIThemeSource);
 };
 
 #endif  // CHROME_BROWSER_DOM_UI_DOM_UI_THEME_SOURCE_H_