Use the loading task runner for mojo-loading

content/child/url_loader_client_impl.cc

 // Copyright 2016 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/child/url_loader_client_impl.h"
 
 #include "base/callback.h"
 #include "base/single_thread_task_runner.h"
 #include "content/child/resource_dispatcher.h"
 #include "content/child/url_response_body_consumer.h"
@@ skipping 12 matching lines @@
       task_runner_(std::move(task_runner)),
       weak_factory_(this) {}
 
 URLLoaderClientImpl::~URLLoaderClientImpl() {
   if (body_consumer_)
     body_consumer_->Cancel();
 }
 
 void URLLoaderClientImpl::Bind(
     mojom::URLLoaderClientAssociatedPtrInfo* client_ptr_info) {
+  // TODO(yhirano): Use |task_runner_| here.
+  // Currently it is unable because of a ChannelAssociatedInterface restriction.
   binding_.Bind(client_ptr_info);
 }
 
 void URLLoaderClientImpl::SetDefersLoading() {
   is_deferred_ = true;
   if (body_consumer_)
     body_consumer_->SetDefersLoading();
 }
 
 void URLLoaderClientImpl::UnsetDefersLoading() {
@@ skipping 135 matching lines @@
 
 void URLLoaderClientImpl::OnUploadProgress(int64_t current_position,
                                            int64_t total_size,
                                            const base::Closure& ack_callback) {
   Dispatch(
       ResourceMsg_UploadProgress(request_id_, current_position, total_size));
   ack_callback.Run();
 }
 
 }  // namespace content