Remove interface probing for IPv6 support from HostResolverImpl

net/base/net_log_event_type_list.h

Index: net/base/net_log_event_type_list.h
diff --git a/net/base/net_log_event_type_list.h b/net/base/net_log_event_type_list.h
index def4e5e141cb5b329d09beeac1f61b740325e4b6..2647e4ccb455ed9f2714338c13618ea064ff2cd6 100644
--- a/net/base/net_log_event_type_list.h
+++ b/net/base/net_log_event_type_list.h
@@ -1971,22 +1971,6 @@ EVENT_TYPE(FILE_STREAM_OPEN)
 //   }
 EVENT_TYPE(FILE_STREAM_ERROR)
 
-// ------------------------------------------------------------------------
-// IPv6 Probe events.
-// ------------------------------------------------------------------------
-
-// This event lasts from the point an IPv6ProbeJob is created until completion.
-//
-// The END contains the following parameters:
-//   {
-//     "ipv6_supported": <Boolean indicating whether or not the probe determined
-//                        IPv6 may be supported>,
-//     "ipv6_support_status": <String indicating the reason for that result>,
-//     "os_error": <Platform dependent error code, associated with the result,
-//                  if any>
-//   }
-EVENT_TYPE(IPV6_PROBE_RUNNING)
-
 // -----------------------------------------------------------------------------
 // FTP events.
 // -----------------------------------------------------------------------------