Make content::ThrottlingURLLoader take a task runner and more efficient.

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 648 matching lines @@
                                      weak_factory_.GetWeakPtr(), request_id,
                                      base::Passed(std::move(consumer_handle))));
 
     return request_id;
   }
 
   if (ipc_type == blink::WebURLRequest::LoadingIPCType::kMojo) {
     scoped_refptr<base::SingleThreadTaskRunner> task_runner =
         loading_task_runner ? loading_task_runner : thread_task_runner_;
     std::unique_ptr<URLLoaderClientImpl> client(
-        new URLLoaderClientImpl(request_id, this, std::move(task_runner)));
+        new URLLoaderClientImpl(request_id, this, task_runner));
     std::unique_ptr<ThrottlingURLLoader> url_loader =
         ThrottlingURLLoader::CreateLoaderAndStart(
             url_loader_factory, std::move(throttles), routing_id, request_id,
-            mojom::kURLLoadOptionNone, std::move(request), client.get());
+            mojom::kURLLoadOptionNone, std::move(request), client.get(),
+            std::move(task_runner));
+    ;
     pending_requests_[request_id]->url_loader = std::move(url_loader);
     pending_requests_[request_id]->url_loader_client = std::move(client);
   } else {
     message_sender_->Send(
         new ResourceHostMsg_RequestResource(routing_id, request_id, *request));
   }
 
   return request_id;
 }
 
@@ skipping 161 matching lines @@
     delete message;
   }
 }
 
 void ResourceDispatcher::SetResourceSchedulingFilter(
     scoped_refptr<ResourceSchedulingFilter> resource_scheduling_filter) {
   resource_scheduling_filter_ = resource_scheduling_filter;
 }
 
 }  // namespace content