Implement transfer navigation with mojo

content/browser/loader/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 67 matching lines @@
 
 class CONTENT_EXPORT ResourceDispatcherHostImpl
     : public ResourceDispatcherHost,
       public ResourceLoaderDelegate {
  public:
   // Used to handle the result of SyncLoad IPC. |result| is null if it's
   // unavailable due to an error.
   using SyncLoadResultCallback =
       base::Callback<void(const SyncLoadResult* result)>;
 
+  using TransferCallback =
+      base::Callback<void(mojom::URLLoaderAssociatedRequest,
+                          mojom::URLLoaderClientAssociatedPtr)>;
   // This constructor should be used if we want downloads to work correctly.
   // TODO(ananta)
   // Work on moving creation of download handlers out of
   // ResourceDispatcherHostImpl.
   ResourceDispatcherHostImpl(
       CreateDownloadHandlerIntercept download_handler_intercept);
   ResourceDispatcherHostImpl();
   ~ResourceDispatcherHostImpl() override;
 
   // Returns the current ResourceDispatcherHostImpl. May return NULL if it
@@ skipping 40 matching lines @@
                          ResourceMessageFilter* filter);
 
   // Cancels the given request if it still exists.
   void CancelRequest(int child_id, int request_id);
 
   // Marks the request, with its current |response|, as "parked". This
   // happens if a request is redirected cross-site and needs to be
   // resumed by a new process.
   void MarkAsTransferredNavigation(
       const GlobalRequestID& id,
-      const base::Closure& on_transfer_complete_callback);
+      const TransferCallback& on_transfer_complete_callback);
 
   // Cancels a request previously marked as being transferred, for use when a
   // navigation was cancelled.
   void CancelTransferringNavigation(const GlobalRequestID& id);
 
   // Resumes the request without transferring it to a new process.
   void ResumeDeferredNavigation(const GlobalRequestID& id);
 
   // Returns the number of pending requests. This is designed for the unittests
   int pending_requests() const {
@@ skipping 388 matching lines @@
   void UpdateRequestForTransfer(int child_id,
                                 int route_id,
                                 int request_id,
                                 const ResourceRequest& request_data,
                                 LoaderMap::iterator iter);
 
   // If |request_data| is for a request being transferred from another process,
   // then CompleteTransfer method can be used to complete the transfer.
   void CompleteTransfer(int request_id,
                         const ResourceRequest& request_data,
-                        int route_id);
+                        int route_id,
+                        mojom::URLLoaderAssociatedRequest mojo_request,
+                        mojom::URLLoaderClientAssociatedPtr url_loader_client);
 
   void BeginRequest(
       int request_id,
       const ResourceRequest& request_data,
       const SyncLoadResultCallback& sync_result_handler,  // only valid for sync
       int route_id,
       mojom::URLLoaderAssociatedRequest mojo_request,
       mojom::URLLoaderClientAssociatedPtr url_loader_client);
 
   // There are requests which need decisions to be made like the following:
@@ skipping 33 matching lines @@
   // loading and navigation requests. This adds MimeTypeResourceHandler and
   // ResourceThrottles.
   std::unique_ptr<ResourceHandler> AddStandardHandlers(
       net::URLRequest* request,
       ResourceType resource_type,
       ResourceContext* resource_context,
       RequestContextType fetch_request_context_type,
       AppCacheService* appcache_service,
       int child_id,
       int route_id,
-      std::unique_ptr<ResourceHandler> handler);
+      std::unique_ptr<ResourceHandler> handler,
+      TransferCallback transfer_callback);
 
   void OnCancelRequest(int request_id);
   void OnReleaseDownloadedFile(int request_id);
   void OnDidChangePriority(int request_id,
                            net::RequestPriority new_priority,
                            int intra_priority_value);
 
   // Creates ResourceRequestInfoImpl for a download or page save.
   // |download| should be true if the request is a file download.
   ResourceRequestInfoImpl* CreateRequestInfo(
@@ skipping 151 matching lines @@
 
   // Points to the registered download handler intercept.
   CreateDownloadHandlerIntercept create_download_handler_intercept_;
 
   DISALLOW_COPY_AND_ASSIGN(ResourceDispatcherHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_LOADER_RESOURCE_DISPATCHER_HOST_IMPL_H_