[Reland] Post loading tasks on the appropriate WebFrameScheduler's queue

content/child/request_info.h

 // Copyright 2014 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.
 
 #ifndef CONTENT_CHILD_REQUEST_INFO_H_
 #define CONTENT_CHILD_REQUEST_INFO_H_
 
 #include <stdint.h>
 
 #include <string>
 
+#include "base/single_thread_task_runner.h"
 #include "content/common/content_export.h"
 #include "content/common/service_worker/service_worker_types.h"
 #include "content/public/common/referrer.h"
 #include "content/public/common/request_context_frame_type.h"
 #include "content/public/common/request_context_type.h"
 #include "content/public/common/resource_type.h"
 #include "net/base/request_priority.h"
 #include "third_party/WebKit/public/platform/WebReferrerPolicy.h"
 #include "third_party/WebKit/public/platform/WebURLRequest.h"
 #include "url/gurl.h"
@@ skipping 81 matching lines @@
   // credentials or default credentials may still be used for authentication.
   bool do_not_prompt_for_login;
 
   // True if the actual headers from the network stack should be reported
   // to the renderer
   bool report_raw_headers;
 
   // Extra data associated with this request.  We do not own this pointer.
   blink::WebURLRequest::ExtraData* extra_data;
 
+  // Optional, the specific task queue to execute loading tasks on.
+  scoped_refptr<base::SingleThreadTaskRunner> loading_task_queue;
+
  private:
   DISALLOW_COPY_AND_ASSIGN(RequestInfo);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_REQUEST_INFO_H_