Add NetLog support to UDP sockets.

net/base/net_log_event_type_list.h

Index: net/base/net_log_event_type_list.h
===================================================================
--- net/base/net_log_event_type_list.h	(revision 104713)
+++ net/base/net_log_event_type_list.h	(working copy)
@@ -288,6 +288,19 @@
 EVENT_TYPE(SUBMITTED_TO_RESOLVER_THREAD)
 
 // ------------------------------------------------------------------------
+// Socket (Shared by stream and datagram sockets)
+// ------------------------------------------------------------------------
+
+// Marks the begin/end of a socket (TCP/SOCKS/SSL/UDP).
+//
+// The BEGIN phase contains the following parameters:
+//
+//   {
+//     "source_dependency": <Source identifier for the controlling entity>,
+//   }
+EVENT_TYPE(SOCKET_ALIVE)
+
+// ------------------------------------------------------------------------
 // StreamSocket
 // ------------------------------------------------------------------------
 
@@ -300,10 +313,11 @@
 //     "address_list": <List of network address strings>,
 //   }
 //
-// And the END event will contain the following parameters on failure:
+// And the END event will contain the following parameters:
 //
 //   {
-//     "net_error": <Net integer error code>,
+//     "net_error": <Net integer error code, on error>,
+//     "source_address": <Local source address of the connection, on success>,
 //   }
 EVENT_TYPE(TCP_CONNECT)
 
@@ -335,9 +349,6 @@
 //   }
 EVENT_TYPE(TCP_ACCEPT)
 
-// Marks the begin/end of a socket (TCP/SOCKS/SSL).
-EVENT_TYPE(SOCKET_ALIVE)
-
 // This event is logged to the socket stream whenever the socket is
 // acquired/released via a ClientSocketHandle.
 //
@@ -453,6 +464,45 @@
 EVENT_TYPE(SSL_SOCKET_BYTES_RECEIVED)
 
 // ------------------------------------------------------------------------
+// DatagramSocket
+// ------------------------------------------------------------------------
+
+// The start/end of a UDP client connecting.
+//
+// The START event contains these parameters:
+//
+//   {
+//     "address": <Remote address being connected to>,
+//   }
+//
+// And the END event will contain the following parameter:
+//
+//   {
+//     "net_error": <Net integer error code, on failure>,
+//   }
+EVENT_TYPE(UDP_CONNECT)
+
+// The specified number of bytes were transferred on the socket.
+// The following parameters are attached:
+//   {
+//     "address": <Remote address of data transfer.  Not present when not
+//                 specified for UDP_BYTES_SENT events>,
+//     "byte_count": <Number of bytes that were just received>,
+//     "hex_encoded_bytes": <The exact bytes received, as a hexadecimal string.
+//                           Only present when byte logging is enabled>,
+//   }
+EVENT_TYPE(UDP_BYTES_RECEIVED)
+EVENT_TYPE(UDP_BYTES_SENT)
+
+// Logged when an error occurs while reading or writing to/from a UDP socket.
+// The following parameters are attached:
+//   {
+//     "net_error": <Net error code>,
+//   }
+EVENT_TYPE(UDP_RECEIVE_ERROR)
+EVENT_TYPE(UDP_SEND_ERROR)
+
+// ------------------------------------------------------------------------
 // ClientSocketPoolBase::ConnectJob
 // ------------------------------------------------------------------------
 
@@ -1111,9 +1161,9 @@
 // The END phase contains the following parameters:
 //
 // {
-//   "net_error": <The net error code for the failure>,
 //   "ip_address_list": <The result of the resolution process,
 //                       an IPAddressList>
+//   "net_error": <The net error code for the failure, if any>,
 // }
 EVENT_TYPE(DNS_TRANSACTION)