Use ResourceRequestInfo::GetWebContents in DownloadRequestLimiter

chrome/browser/download/download_resource_throttle.h

 // 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.
 
 #ifndef CHROME_BROWSER_DOWNLOAD_DOWNLOAD_RESOURCE_THROTTLE_H_
 #define CHROME_BROWSER_DOWNLOAD_DOWNLOAD_RESOURCE_THROTTLE_H_
 
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/download/download_request_limiter.h"
 #include "content/public/browser/resource_throttle.h"
 
 class GURL;
 
 // DownloadResourceThrottle is used to determine if a download should be
 // allowed. When a DownloadResourceThrottle is created it pauses the download
 // and asks the DownloadRequestLimiter if the download should be allowed. The
 // DownloadRequestLimiter notifies us asynchronously as to whether the download
 // is allowed or not. If the download is allowed the request is resumed.  If
 // the download is not allowed the request is canceled.
 
 class DownloadResourceThrottle
     : public content::ResourceThrottle,
       public base::SupportsWeakPtr<DownloadResourceThrottle> {
  public:
   // Information passed between callbacks to check whether download can proceed.
   struct DownloadRequestInfo {
     DownloadRequestInfo(
         scoped_refptr<DownloadRequestLimiter> limiter,
-        int render_process_id,
-        int render_view_id,
+        const base::Callback<content::WebContents*(void)>& web_contents_getter,
         const GURL& url,
         const std::string& request_method,
         const DownloadRequestLimiter::Callback& continue_callback);
     ~DownloadRequestInfo();
 
     scoped_refptr<DownloadRequestLimiter> limiter;
-    int render_process_id;
-    int render_view_id;
+    base::Callback<content::WebContents*(void)> web_contents_getter;
     GURL url;
     std::string request_method;
     DownloadRequestLimiter::Callback continue_callback;
    private:
     DISALLOW_COPY_AND_ASSIGN(DownloadRequestInfo);
   };
 
-  DownloadResourceThrottle(scoped_refptr<DownloadRequestLimiter> limiter,
-                           int render_process_id,
-                           int render_view_id,
-                           const GURL& url,
-                           const std::string& request_method);
+  DownloadResourceThrottle(
+      scoped_refptr<DownloadRequestLimiter> limiter,
+      const base::Callback<content::WebContents*(void)>& web_contents_getter,
+      const GURL& url,
+      const std::string& request_method);
 
   // content::ResourceThrottle implementation:
   void WillStartRequest(bool* defer) override;
   void WillRedirectRequest(const net::RedirectInfo& redirect_info,
                            bool* defer) override;
   void WillProcessResponse(bool* defer) override;
   const char* GetNameForLogging() const override;
 
   void ContinueDownload(bool allow);
 
  private:
   ~DownloadResourceThrottle() override;
 
   void WillDownload(bool* defer);
 
   // Set to true when we are querying the DownloadRequestLimiter.
   bool querying_limiter_;
 
   // Set to true when we know that the request is allowed to start.
   bool request_allowed_;
 
   // Set to true when we have deferred the request.
   bool request_deferred_;
 
   DISALLOW_COPY_AND_ASSIGN(DownloadResourceThrottle);
 };
 
 #endif  // CHROME_BROWSER_DOWNLOAD_DOWNLOAD_RESOURCE_THROTTLE_H_