Plumb the referrer throughout the OpenURL APIs....

chrome/browser/web_contents.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_WEB_CONTENTS_H_
 #define CHROME_BROWSER_WEB_CONTENTS_H_
 
 #include "base/hash_tables.h"
 #include "chrome/browser/download/save_package.h"
 #include "chrome/browser/fav_icon_helper.h"
@@ skipping 246 matching lines @@
       int error_code,
       const GURL& url,
       bool showing_repost_interstitial);
   virtual void UpdateFavIconURL(RenderViewHost* render_view_host,
                                 int32 page_id, const GURL& icon_url);
   virtual void DidDownloadImage(RenderViewHost* render_view_host,
                                 int id,
                                 const GURL& image_url,
                                 bool errored,
                                 const SkBitmap& image);
-  virtual void RequestOpenURL(const GURL& url,
+  virtual void RequestOpenURL(const GURL& url, const GURL& referrer,
                               WindowOpenDisposition disposition);
   virtual void DomOperationResponse(const std::string& json_string,
                                     int automation_id);
   virtual void ProcessExternalHostMessage(const std::string& receiver,
                                           const std::string& message);
   virtual void GoToEntryAtOffset(int offset);
   virtual void GetHistoryListCount(int* back_list_count,
                                    int* forward_list_count);
   virtual void RunFileChooser(const std::wstring& default_file);
   virtual void RunJavaScriptMessage(const std::wstring& message,
@@ skipping 271 matching lines @@
   net::LoadState load_state_;
   std::wstring load_state_host_;
 
   // Non-null if we're displaying content for a web app.
   scoped_refptr<WebApp> web_app_;
 
   DISALLOW_COPY_AND_ASSIGN(WebContents);
 };
 
 #endif  // CHROME_BROWSER_WEB_CONTENTS_H_