FTP: add net-internals logging.

net/base/net_log_event_type_list.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // NOTE: No header guards are used, since this file is intended to be expanded
 // directly into net_log.h. DO NOT include this file anywhere else.
 
 // In the event of a failure, a many end events will have a |net_error|
 // parameter with the integer error code associated with the failure.  Most
 // of these parameters are not individually documented.
@@ skipping 1707 matching lines @@
 //
 // 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.
+// -----------------------------------------------------------------------------
+
+// This event is created when an FTP command is sent. It contains following
+// parameters:
+//   {
+//     "command": <String - the command sent to remote server>
+//   }
+EVENT_TYPE(FTP_COMMAND_SENT)
+
+// This event is created when FTP control connection is made. It contains
+// following parameters:
+//   {
+//     "source_dependency": <id of log for control connection socket>
+//   }
+EVENT_TYPE(FTP_CONTROL_CONNECTION)
+
+// This event is created when FTP data connection is made. It contains
+// following parameters:
+//   {
+//     "source_dependency": <id of log for data connection socket>
+//   }
+EVENT_TYPE(FTP_DATA_CONNECTION)
+
+// This event is created when FTP control connection response is processed.
+// It contains following parameters:
+//   {
+//     "lines": <list of strings - each representing a line of the response>
+//     "status_code": <numeric status code of the response>
+//   }
+EVENT_TYPE(FTP_CONTROL_RESPONSE)