base::Bind: Convert Socket::Write.

net/socket/socks_client_socket.cc

Index: net/socket/socks_client_socket.cc
diff --git a/net/socket/socks_client_socket.cc b/net/socket/socks_client_socket.cc
index 623f202af4f7cfe82a8242e7a8d56e07d116e10c..40f845363b3a716c943943bf928dd64e8d0e2d2f 100644
--- a/net/socket/socks_client_socket.cc
+++ b/net/socket/socks_client_socket.cc
@@ -235,7 +235,15 @@ int SOCKSClientSocket::Write(IOBuffer* buf, int buf_len,
                              OldCompletionCallback* callback) {
   DCHECK(completed_handshake_);
   DCHECK_EQ(STATE_NONE, next_state_);
-  DCHECK(!old_user_callback_);
+  DCHECK(!old_user_callback_ && user_callback_.is_null());
+
+  return transport_->socket()->Write(buf, buf_len, callback);
+}
+int SOCKSClientSocket::Write(IOBuffer* buf, int buf_len,
+                             const CompletionCallback& callback) {
+  DCHECK(completed_handshake_);
+  DCHECK_EQ(STATE_NONE, next_state_);
+  DCHECK(!old_user_callback_ && user_callback_.is_null());
 
   return transport_->socket()->Write(buf, buf_len, callback);
 }