Plumb the referrer throughout the OpenURL APIs....

chrome/browser/dom_ui/new_tab_ui.h

 // Copyright (c) 2006-2008 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_NEW_TAB_UI_H__
 #define CHROME_BROWSER_DOM_UI_NEW_TAB_UI_H__
 
 #include "chrome/browser/bookmarks/bookmark_model.h"
 #include "chrome/browser/dom_ui/dom_ui_host.h"
 #include "chrome/browser/dom_ui/chrome_url_data_manager.h"
@@ skipping 282 matching lines @@
   // The bookmark bar is always visible on the new tab.
   virtual bool IsBookmarkBarAlwaysVisible() { return true; }
   // Return forced_title_ if it's available.
   virtual const std::wstring& GetTitle() const;
   // When we get the initial focus, focus the URL bar.
   virtual void SetInitialFocus();
   // The URL bar should not display the current page's URL.
   virtual bool ShouldDisplayURL() { return false; }
   virtual bool SupportsURL(GURL* url);
   // Clicking a URL on the page should count as an autobookmark click.
-  virtual void RequestOpenURL(const GURL& url,
+  virtual void RequestOpenURL(const GURL& url, const GURL& referrer,
                               WindowOpenDisposition disposition);
  private:
   // The message id that should be displayed in this NewTabUIContents
   // instance's motd area.
   int motd_message_id_;
 
   // Whether the user is in incognito mode or not, used to determine
   // what HTML to load.
   bool incognito_;
 
   // A title for the page we force display of.
   // This prevents intermediate titles (like "Loading...") from displaying.
   std::wstring forced_title_;
 
   // A pointer to the handler for most visited.
   // Owned by the DOMUIHost.
   MostVisitedHandler* most_visited_handler_;
 
   DISALLOW_EVIL_CONSTRUCTORS(NewTabUIContents);
 };
 
 #endif  // CHROME_BROWSER_DOM_UI_NEW_TAB_UI_H__