Resume the main job immediately when QUIC job fails, not wait for the head start timer to exprie

net/http/http_stream_factory_impl_job_controller.h

 // Copyright (c) 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.
 
 #ifndef NET_HTTP_HTTP_STREAM_FACTORY_IMPL_JOB_CONTROLLER_H_
 #define NET_HTTP_HTTP_STREAM_FACTORY_IMPL_JOB_CONTROLLER_H_
 
 #include "net/base/host_port_pair.h"
 #include "net/base/privacy_mode.h"
 #include "net/http/http_stream_factory_impl_job.h"
@@ skipping 286 matching lines @@
   // server that |alternative_job_| uses.
   AlternativeService failed_alternative_service_;
   ProxyServer failed_alternative_proxy_server_;
 
   // True if a Job has ever been bound to the |request_|.
   bool job_bound_;
 
   // True if the main job has to wait for the alternative job: i.e., the main
   // job must not create a connection until it is resumed.
   bool main_job_is_blocked_;
+
+  // True if the main job was blocked and has been resumed in ResumeMainJob().
+  bool main_job_is_resumed_;

[Ryan Hamilton, 2017/02/15 00:07:02]

nit: newline after 

(or no newline before, but might as well add it)

[Zhongyi Shi, 2017/02/15 00:26:58]

Done.

   // Waiting time for the main job before it is resumed.
   base::TimeDelta main_job_wait_time_;
 
   // At the point where a Job is irrevocably tied to |request_|, we set this.
   // It will be nulled when the |request_| is finished.
   Job* bound_job_;
 
   // True if an alternative proxy server job can be started to fetch |request_|.
   bool can_start_alternative_proxy_job_;
 
   // Privacy mode that should be used for fetching the resource.
   PrivacyMode privacy_mode_;
 
   const NetLogWithSource net_log_;
 
   base::WeakPtrFactory<JobController> ptr_factory_;
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_STREAM_FACTORY_IMPL_JOB_CONTROLLER_H_