Cleanup CanDownload WebContentsDelegate API

chrome/browser/download/download_resource_throttle.cc

 // 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.
 
 #include "chrome/browser/download/download_resource_throttle.h"
 
 #include "base/bind.h"
 #include "chrome/browser/download/download_stats.h"
 #include "content/public/browser/resource_controller.h"
 
 DownloadResourceThrottle::DownloadResourceThrottle(
     DownloadRequestLimiter* limiter,
     int render_process_id,
     int render_view_id,
-    int request_id,
+    const GURL& url,
     const std::string& request_method)
     : querying_limiter_(true),
       request_allowed_(false),
       request_deferred_(false) {
   limiter->CanDownloadOnIOThread(
       render_process_id,
       render_view_id,
-      request_id,
+      url,
       request_method,
       base::Bind(&DownloadResourceThrottle::ContinueDownload,
                  AsWeakPtr()));
 }
 
 DownloadResourceThrottle::~DownloadResourceThrottle() {
 }
 
 void DownloadResourceThrottle::WillStartRequest(bool* defer) {
   WillDownload(defer);
@@ skipping 40 matching lines @@
 
   if (request_deferred_) {
     request_deferred_ = false;
     if (allow) {
       controller()->Resume();
     } else {
       controller()->Cancel();
     }
   }
 }