Teach mojo::Watcher in URLResponseBodyConsumer the correct task runner

content/child/resource_dispatcher.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.
 
 // See http://dev.chromium.org/developers/design-documents/multi-process-resource-loading
 
 #include "content/child/resource_dispatcher.h"
 
 #include <utility>
 
@@ skipping 80 matching lines @@
 
   void OnReceiveResponse(const ResourceResponseHead& response_head) override {
     resource_dispatcher_->OnMessageReceived(
         ResourceMsg_ReceivedResponse(request_id_, response_head));
   }
 
   void OnStartLoadingResponseBody(
       mojo::ScopedDataPipeConsumerHandle body) override {
     DCHECK(!body_consumer_);
     body_consumer_ = new URLResponseBodyConsumer(
-        request_id_, resource_dispatcher_, std::move(body), task_runner_.get());
+        request_id_, resource_dispatcher_, std::move(body), task_runner_);
   }
 
   void OnComplete(const ResourceRequestCompletionStatus& status) override {
     body_consumer_->OnComplete(status);
   }
 
   mojom::URLLoaderClientPtr CreateInterfacePtrAndBind() {
     return binding_.CreateInterfacePtrAndBind();
   }
 
@@ skipping 763 matching lines @@
     *frame_origin = extra_data->frame_origin();
   return request;
 }
 
 void ResourceDispatcher::SetResourceSchedulingFilter(
     scoped_refptr<ResourceSchedulingFilter> resource_scheduling_filter) {
   resource_scheduling_filter_ = resource_scheduling_filter;
 }
 
 }  // namespace content