Replace the GURL referrer field of OpenURLParams with a content::Referrer

content/browser/renderer_host/render_view_host_delegate.h

 // Copyright (c) 2011 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 CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 262 matching lines @@
       int32 page_id) {}
 
   // The page wants to open a URL with the specified disposition.
   virtual void RequestOpenURL(const GURL& url,
                               const content::Referrer& referrer,
                               WindowOpenDisposition disposition,
                               int64 source_frame_id) {}
 
   // The page wants to transfer the request to a new renderer.
   virtual void RequestTransferURL(const GURL& url,
-                                  const GURL& referrer,
+                                  const content::Referrer& referrer,
                                   WindowOpenDisposition disposition,
                                   int64 source_frame_id,
                                   const GlobalRequestID& old_request_id) {}
 
   // A javascript message, confirmation or prompt should be shown.
   virtual void RunJavaScriptMessage(const RenderViewHost* rvh,
                                     const string16& message,
                                     const string16& default_prompt,
                                     const GURL& frame_url,
                                     const int flags,
@@ skipping 95 matching lines @@
   virtual void RequestToLockMouse() {}
 
   // Notification that the view has lost the mouse lock.
   virtual void LostMouseLock() {}
 
  protected:
   virtual ~RenderViewHostDelegate() {}
 };
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_