Implement transfer navigation with mojo

content/browser/loader/resource_request_info_impl.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 "content/browser/loader/resource_request_info_impl.h"
 
 #include "content/browser/frame_host/frame_tree_node.h"
 #include "content/browser/loader/global_routing_id.h"
 #include "content/browser/loader/resource_message_filter.h"
 #include "content/browser/web_contents/web_contents_impl.h"
@@ skipping 320 matching lines @@
 GlobalRoutingID ResourceRequestInfoImpl::GetGlobalRoutingID() const {
   return GlobalRoutingID(child_id_, route_id_);
 }
 
 void ResourceRequestInfoImpl::UpdateForTransfer(
     int child_id,
     int route_id,
     int render_frame_id,
     int origin_pid,
     int request_id,
-    base::WeakPtr<ResourceMessageFilter> filter) {
+    base::WeakPtr<ResourceMessageFilter> filter,
+    mojom::URLLoaderAssociatedRequest url_loader_request,
+    mojom::URLLoaderClientAssociatedPtr url_loader_client) {
   child_id_ = child_id;
   route_id_ = route_id;
   render_frame_id_ = render_frame_id;
   origin_pid_ = origin_pid;
   request_id_ = request_id;
   filter_ = filter;
+
+  // on_transfer_ is non-null only when MojoAsyncResourceHandler is used.
+  if (on_transfer_) {
+    on_transfer_.Run(std::move(url_loader_request),
+                     std::move(url_loader_client));
+  }
 }
 
 void ResourceRequestInfoImpl::ResetBody() {
   body_ = nullptr;
 }
 
 }  // namespace content