Have content cancel requests for ResourceContexts when they shutdown, instead of depending on the e…

content/browser/renderer_host/resource_dispatcher_host_impl.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.
 
 // This is the browser side of the resource dispatcher, it receives requests
 // from the child process (i.e. [Renderer, Plugin, Worker]ProcessHost), and
 // dispatches them to URLRequests. It then forwards the messages from the
 // URLRequests back to the correct process for handling.
 //
 // See http://dev.chromium.org/developers/design-documents/multi-process-resource-loading
@@ skipping 54 matching lines @@
   ResourceDispatcherHostImpl();
   virtual ~ResourceDispatcherHostImpl();
 
   // Returns the current ResourceDispatcherHostImpl. May return NULL if it
   // hasn't been created yet.
   static ResourceDispatcherHostImpl* Get();
 
   // ResourceDispatcherHost implementation:
   virtual void SetDelegate(ResourceDispatcherHostDelegate* delegate) OVERRIDE;
   virtual void SetAllowCrossOriginAuthPrompt(bool value) OVERRIDE;
-  virtual void CancelRequestsForContext(ResourceContext* context) OVERRIDE;
   virtual net::Error BeginDownload(
       scoped_ptr<net::URLRequest> request,
       ResourceContext* context,
       int child_id,
       int route_id,
       bool prefer_cache,
       const DownloadSaveInfo& save_info,
       const DownloadStartedCallback& started_callback) OVERRIDE;
   virtual void ClearLoginDelegateForRequest(net::URLRequest* request) OVERRIDE;
   virtual void MarkAsTransferredNavigation(net::URLRequest* request) OVERRIDE;
 
   // Puts the resource dispatcher host in an inactive state (unable to begin
   // new requests).  Cancels all pending requests.
   void Shutdown();
 
+  // Force cancels any pending requests for the given |context|. This is
+  // necessary to ensure that before |context| goes away, all requests
+  // for it are dead.
+  void CancelRequestsForContext(ResourceContext* context);
+
   // Returns true if the message was a resource message that was processed.
   // If it was, message_was_ok will be false iff the message was corrupt.
   bool OnMessageReceived(const IPC::Message& message,
                          ResourceMessageFilter* filter,
                          bool* message_was_ok);
 
   // Initiates a save file from the browser process (as opposed to a resource
   // request from the renderer or another child process).
   void BeginSaveFile(const GURL& url,
                      const GURL& referrer,
@@ skipping 395 matching lines @@
   // to the respective request.
   typedef std::map<GlobalRequestID, net::URLRequest*> TransferredNavigations;
   TransferredNavigations transferred_navigations_;
 
   DISALLOW_COPY_AND_ASSIGN(ResourceDispatcherHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RESOURCE_DISPATCHER_HOST_IMPL_H_