Revert of Return Request as unique_ptr from JobController::Start().

net/http/http_stream_factory_impl_job_controller.cc

 // 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.
 
 #include "net/http/http_stream_factory_impl_job_controller.h"
 
 #include <string>
 #include <utility>
 
 #include "base/memory/ptr_util.h"
@@ skipping 97 matching lines @@
   bound_job_ = nullptr;
   if (pac_request_)
     session_->proxy_service()->CancelPacRequest(pac_request_);
   net_log_.EndEvent(NetLogEventType::HTTP_STREAM_JOB_CONTROLLER);
 }
 
 bool HttpStreamFactoryImpl::JobController::for_websockets() {
   return factory_->for_websockets_;
 }
 
-std::unique_ptr<HttpStreamFactoryImpl::Request>
-HttpStreamFactoryImpl::JobController::Start(
+HttpStreamFactoryImpl::Request* HttpStreamFactoryImpl::JobController::Start(
     HttpStreamRequest::Delegate* delegate,
     WebSocketHandshakeStreamBase::CreateHelper*
         websocket_handshake_stream_create_helper,
     const NetLogWithSource& source_net_log,
     HttpStreamRequest::StreamType stream_type,
     RequestPriority priority) {
   DCHECK(factory_);
   DCHECK(!request_);
 
   stream_type_ = stream_type;
   priority_ = priority;
 
-  auto request = base::MakeUnique<Request>(
-      request_info_.url, this, delegate,
-      websocket_handshake_stream_create_helper, source_net_log, stream_type);
-  // Keep a raw pointer but release ownership of Request instance.
-  request_ = request.get();
-
+  request_ = new Request(request_info_.url, this, delegate,
+                         websocket_handshake_stream_create_helper,
+                         source_net_log, stream_type);
   // Associates |net_log_| with |source_net_log|.
   source_net_log.AddEvent(NetLogEventType::HTTP_STREAM_JOB_CONTROLLER_BOUND,
                           net_log_.source().ToEventParametersCallback());
   net_log_.AddEvent(NetLogEventType::HTTP_STREAM_JOB_CONTROLLER_BOUND,
                     source_net_log.source().ToEventParametersCallback());
 
   RunLoop(OK);
-  return request;
+  return request_;
 }
 
 void HttpStreamFactoryImpl::JobController::Preconnect(int num_streams) {
   DCHECK(!main_job_);
   DCHECK(!alternative_job_);
   DCHECK(is_preconnect_);
 
   stream_type_ = HttpStreamRequest::HTTP_STREAM;
   num_streams_ = num_streams;
 
@@ skipping 1104 matching lines @@
     // If ReconsiderProxyAfterError() failed synchronously, it means
     // there was nothing left to fall-back to, so fail the transaction
     // with the last connection error we got.
     // TODO(eroman): This is a confusing contract, make it more obvious.
     rv = error;
   }
   return rv;
 }
 
 }  // namespace net