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

net/http/http_stream_factory_impl_job_controller.cc

Index: net/http/http_stream_factory_impl_job_controller.cc
diff --git a/net/http/http_stream_factory_impl_job_controller.cc b/net/http/http_stream_factory_impl_job_controller.cc
index e53ff88f170ddc5d33909b6fa0160a9788fadd52..0ac37d4b8b9ee71940d6c8bcb2b0259a9b195224 100644
--- a/net/http/http_stream_factory_impl_job_controller.cc
+++ b/net/http/http_stream_factory_impl_job_controller.cc
@@ -119,7 +119,8 @@ bool HttpStreamFactoryImpl::JobController::for_websockets() {
   return factory_->for_websockets_;
 }
 
-HttpStreamFactoryImpl::Request* HttpStreamFactoryImpl::JobController::Start(
+std::unique_ptr<HttpStreamFactoryImpl::Request>
+HttpStreamFactoryImpl::JobController::Start(
     HttpStreamRequest::Delegate* delegate,
     WebSocketHandshakeStreamBase::CreateHelper*
         websocket_handshake_stream_create_helper,
@@ -132,9 +133,12 @@ HttpStreamFactoryImpl::Request* HttpStreamFactoryImpl::JobController::Start(
   stream_type_ = stream_type;
   priority_ = priority;
 
-  request_ = new Request(request_info_.url, this, delegate,
-                         websocket_handshake_stream_create_helper,
-                         source_net_log, stream_type);
+  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();
+
   // Associates |net_log_| with |source_net_log|.
   source_net_log.AddEvent(NetLogEventType::HTTP_STREAM_JOB_CONTROLLER_BOUND,
                           net_log_.source().ToEventParametersCallback());
@@ -142,7 +146,7 @@ HttpStreamFactoryImpl::Request* HttpStreamFactoryImpl::JobController::Start(
                     source_net_log.source().ToEventParametersCallback());
 
   RunLoop(OK);
-  return request_;
+  return request;
 }
 
 void HttpStreamFactoryImpl::JobController::Preconnect(int num_streams) {