SPDY - update the comment to have "status" for SPDY_SESSION_GOAWAY

net log event.

https://src.chromium.org/viewvc/chrome?view=rev&revision=148115 is 
the original CL that had the logging.


BUG=133995
R=willchan
TEST=network unit tests

Review URL: https://chromiumcodereview.appspot.com/10833059

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@148873 0039d316-1c4b-4281-b951-d872f2087c98

net/base/net_log_event_type_list.h

@@ -1034,6 +1034,7 @@ EVENT_TYPE(SPDY_SESSION_PING)
 //     "last_accepted_stream_id": <Last stream id accepted by the server, duh>,
 //     "active_streams":          <Number of active streams>,
 //     "unclaimed_streams":       <Number of unclaimed push streams>,
+//     "status":                  <The reason for the GOAWAY>,
 //   }
 EVENT_TYPE(SPDY_SESSION_GOAWAY)