Factor out dependncy on download throttling from core download code.

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"
 #include "content/browser/renderer_host/resource_dispatcher_host_delegate.h"
 
+class DownloadRequestLimiter;
 class ResourceDispatcherHost;
 class SafeBrowsingService;
 
 namespace prerender {
 class PrerenderTracker;
 }
 
 // Implements ResourceDispatcherHostDelegate. Currently used by the Prerender
 // system to abort requests and add to the load flags when a request begins.
 class ChromeResourceDispatcherHostDelegate
@@ skipping 17 matching lines @@
   virtual ResourceHandler* RequestBeginning(
       ResourceHandler* handler,
       net::URLRequest* request,
       const content::ResourceContext& resource_context,
       bool is_subresource,
       int child_id,
       int route_id) OVERRIDE;
   virtual ResourceHandler* DownloadStarting(
       ResourceHandler* handler,
       const content::ResourceContext& resource_context,
+      net::URLRequest* request,
       int child_id,
-      int route_id) OVERRIDE;
+      int route_id,
+      int request_id,
+      bool is_new_request,
+      bool in_complete) OVERRIDE;
   virtual bool ShouldDeferStart(
       net::URLRequest* request,
       const content::ResourceContext& resource_context) OVERRIDE;
   virtual bool AcceptSSLClientCertificateRequest(
         net::URLRequest* request,
         net::SSLCertRequestInfo* cert_request_info) OVERRIDE;
   virtual bool AcceptAuthRequest(net::URLRequest* request,
                                  net::AuthChallengeInfo* auth_info) OVERRIDE;
   virtual ResourceDispatcherHostLoginDelegate* CreateLoginDelegate(
       net::AuthChallengeInfo* auth_info, net::URLRequest* request) OVERRIDE;
   virtual void HandleExternalProtocol(const GURL& url,
                                       int child_id,
                                       int route_id) OVERRIDE;
   virtual bool ShouldForceDownloadResource(
       const GURL& url, const std::string& mime_type) OVERRIDE;
   virtual void OnResponseStarted(
       net::URLRequest* request,
       ResourceResponse* response,
       ResourceMessageFilter* filter) OVERRIDE;
   virtual void OnRequestRedirected(
       net::URLRequest* request,
       ResourceResponse* response,
       ResourceMessageFilter* filter) OVERRIDE;
 
  private:
   ResourceHandler* CreateSafeBrowsingResourceHandler(
       ResourceHandler* handler, int child_id, int route_id, bool subresource);
 
   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_