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

net/http/http_stream_factory.h

Index: net/http/http_stream_factory.h
diff --git a/net/http/http_stream_factory.h b/net/http/http_stream_factory.h
index be28c0f13c5998cdd98ca93f0a41a33c2b29d26d..2c8826a69c0d9fc47eb9773ef5c6edfe6edeb657 100644
--- a/net/http/http_stream_factory.h
+++ b/net/http/http_stream_factory.h
@@ -203,7 +203,7 @@ class NET_EXPORT HttpStreamFactory {
 
   // Request a stream.
   // Will call delegate->OnStreamReady on successful completion.
-  virtual HttpStreamRequest* RequestStream(
+  virtual std::unique_ptr<HttpStreamRequest> RequestStream(
       const HttpRequestInfo& info,
       RequestPriority priority,
       const SSLConfig& server_ssl_config,
@@ -216,7 +216,7 @@ class NET_EXPORT HttpStreamFactory {
   // Request a WebSocket handshake stream.
   // Will call delegate->OnWebSocketHandshakeStreamReady on successful
   // completion.
-  virtual HttpStreamRequest* RequestWebSocketHandshakeStream(
+  virtual std::unique_ptr<HttpStreamRequest> RequestWebSocketHandshakeStream(
       const HttpRequestInfo& info,
       RequestPriority priority,
       const SSLConfig& server_ssl_config,
@@ -230,7 +230,7 @@ class NET_EXPORT HttpStreamFactory {
   // Request a BidirectionalStreamImpl.
   // Will call delegate->OnBidirectionalStreamImplReady on successful
   // completion.
-  virtual HttpStreamRequest* RequestBidirectionalStreamImpl(
+  virtual std::unique_ptr<HttpStreamRequest> RequestBidirectionalStreamImpl(
       const HttpRequestInfo& info,
       RequestPriority priority,
       const SSLConfig& server_ssl_config,