Add support for content::Referrer to prerender

chrome/browser/renderer_host/chrome_resource_dispatcher_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 CHROME_BROWSER_RENDERER_HOST_CHROME_RESOURCE_DISPATCHER_HOST_DELEGATE_H_
 #define CHROME_BROWSER_RENDERER_HOST_CHROME_RESOURCE_DISPATCHER_HOST_DELEGATE_H_
 #pragma once
 
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
@@ skipping 22 matching lines @@
   virtual ~ChromeResourceDispatcherHostDelegate();
 
   // ResourceDispatcherHostDelegate implementation.
   virtual bool ShouldBeginRequest(
       int child_id,
       int route_id,
       const std::string& method,
       const GURL& url,
       ResourceType::Type resource_type,
       const content::ResourceContext& resource_context,
-      const GURL& referrer) OVERRIDE;
+      const content::Referrer& referrer) OVERRIDE;
   virtual ResourceHandler* RequestBeginning(
       ResourceHandler* handler,
       net::URLRequest* request,
       const content::ResourceContext& resource_context,
       bool is_subresource,
       int child_id,
       int route_id,
       bool is_continuation_of_transferred_request) OVERRIDE;
   virtual ResourceHandler* DownloadStarting(
       ResourceHandler* handler,
@@ skipping 34 matching lines @@
 
   ResourceDispatcherHost* resource_dispatcher_host_;
   scoped_refptr<DownloadRequestLimiter> download_request_limiter_;
   scoped_refptr<SafeBrowsingService> safe_browsing_;
   prerender::PrerenderTracker* prerender_tracker_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeResourceDispatcherHostDelegate);
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_CHROME_RESOURCE_DISPATCHER_HOST_DELEGATE_H_