Rework the logging for sockets/connectjobs....

net/socket/client_socket_handle.h

Index: net/socket/client_socket_handle.h
===================================================================
--- net/socket/client_socket_handle.h	(revision 48758)
+++ net/socket/client_socket_handle.h	(working copy)
@@ -14,6 +14,7 @@
 #include "net/base/completion_callback.h"
 #include "net/base/load_states.h"
 #include "net/base/net_errors.h"
+#include "net/base/net_log.h"
 #include "net/base/request_priority.h"
 #include "net/socket/client_socket.h"
 #include "net/socket/client_socket_pool.h"
@@ -144,6 +145,8 @@
   base::TimeTicks init_time_;
   base::TimeDelta setup_time_;
 
+  NetLog::Source requesting_source_;
+
   DISALLOW_COPY_AND_ASSIGN(ClientSocketHandle);
 };
 
@@ -155,6 +158,8 @@
                              CompletionCallback* callback,
                              const scoped_refptr<PoolType>& pool,
                              const BoundNetLog& net_log) {
+  requesting_source_ = net_log.source();
+
   CHECK(!group_name.empty());
   // Note that this will result in a link error if the SocketParams has not been
   // registered for the PoolType via REGISTER_SOCKET_PARAMS_FOR_POOL (defined in