Simplify the the logic for setting the final response status for a

net/quic/chromium/quic_http_stream.h

Index: net/quic/chromium/quic_http_stream.h
diff --git a/net/quic/chromium/quic_http_stream.h b/net/quic/chromium/quic_http_stream.h
index bd1250e6d009f37c2dbd72e354c072865a325005..2ca5bbcfed78744500833c60e124fbd03c2a9bcf 100644
--- a/net/quic/chromium/quic_http_stream.h
+++ b/net/quic/chromium/quic_http_stream.h
@@ -135,6 +135,18 @@ class NET_EXPORT_PRIVATE QuicHttpStream
 
   void ResetStream();
 
+  // If |has_response_status_| is false, sets |response_status| to the result
+  // of ComputeResponseStatus(). Returns |response_status_|.
+  int GetResponseStatus();
+  // Sets the result of |ComputeResponseStatus()| as the |response_status_|.
+  void SaveResponseStatus();
+  // Sets |response_status_| to |response_status| and sets
+  // |has_response_status_| to true.
+  void SetResponseStatus(int response_status);
+  // Computes the correct response status based on the status of the handshake,
+  // |session_error|, |connection_error| and |stream_error|.
+  int ComputeResponseStatus() const;
+
   State next_state_;
 
   base::WeakPtr<QuicChromiumClientSession> session_;
@@ -163,6 +175,7 @@ class NET_EXPORT_PRIVATE QuicHttpStream
   // |response_info_| is the HTTP response data object which is filled in
   // when a the response headers are read.  It is not owned by this stream.
   HttpResponseInfo* response_info_;
+  bool has_response_status_;  // true if response_status_ as been set.
   // Because response data is buffered, also buffer the response status if the
   // stream is explicitly closed via OnError or OnClose with an error.
   // Once all buffered data has been returned, this will be used as the final
@@ -202,7 +215,8 @@ class NET_EXPORT_PRIVATE QuicHttpStream
 
   NetLogWithSource stream_net_log_;
 
-  QuicErrorCode quic_connection_error_;
+  QuicErrorCode quic_connection_error_;       // Cached connection error code.
+  QuicRstStreamErrorCode quic_stream_error_;  // Cached stream error code.
 
   // True when this stream receives a go away from server due to port migration.
   bool port_migration_detected_;