Do not attempt to reuse active sockets after a socket pool flush (usually a network change).

net/socket/socks_client_socket_pool.cc

Index: net/socket/socks_client_socket_pool.cc
diff --git a/net/socket/socks_client_socket_pool.cc b/net/socket/socks_client_socket_pool.cc
index 4c446ab99ddcfd9b07eaaa007a8b8ec8595004d2..ad924f8d0cf76a36b7a279b075511ba723a42091 100644
--- a/net/socket/socks_client_socket_pool.cc
+++ b/net/socket/socks_client_socket_pool.cc
@@ -195,8 +195,13 @@ void SOCKSClientSocketPool::CancelRequest(
 
 void SOCKSClientSocketPool::ReleaseSocket(
     const std::string& group_name,
-    ClientSocket* socket) {
-  base_.ReleaseSocket(group_name, socket);
+    ClientSocket* socket,
+    int id) {
+  base_.ReleaseSocket(group_name, socket, id);
+}
+
+void SOCKSClientSocketPool::Flush() {
+  base_.Flush();
 }
 
 void SOCKSClientSocketPool::CloseIdleSockets() {