Add frameId to MessageSender (extension messaging API)

chrome/browser/tab_contents/tab_util.h

 // 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.
 
 #ifndef CHROME_BROWSER_TAB_CONTENTS_TAB_UTIL_H_
 #define CHROME_BROWSER_TAB_CONTENTS_TAB_UTIL_H_
 
 class GURL;
 class Profile;
 
 namespace content {
 class SiteInstance;
 class WebContents;
 }
 
 namespace tab_util {
 
 // Helper to find the WebContents that originated the given request. Can be
 // NULL if the tab has been closed or some other error occurs.
 // Should only be called from the UI thread, since it accesses WebContents.
 content::WebContents* GetWebContentsByID(int render_process_id,
                                          int render_view_id);
 
+content::WebContents* GetWebContentsByFrameID(int render_process_id,
+                                              int render_frame_id);
+
 // Returns a new SiteInstance for WebUI and app URLs. Returns NULL otherwise.
 content::SiteInstance* GetSiteInstanceForNewTab(
     Profile* profile,
     const GURL& url);
 
 }  // namespace tab_util
 
 #endif  // CHROME_BROWSER_TAB_CONTENTS_TAB_UTIL_H_