mojom: Remove braces from module statements and make them come first.

mojo/services/public/interfaces/network/tcp_server_socket.mojom

 // Copyright 2014 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.
 
+module mojo;
+
 import "mojo/services/public/interfaces/network/net_address.mojom";
 import "mojo/services/public/interfaces/network/network_error.mojom";
 import "mojo/services/public/interfaces/network/tcp_connected_socket.mojom";
 
-module mojo {
-
 // Represents a TCP server socket listening for incoming requests.
 interface TCPServerSocket {
   // Waits for an incoming connection request and hooks up a TCPConnectedSocket
   // for connecting with the remote host. Only one Accept call can be pending
   // at a time.
   //
   // Once a connection has been established (indicated by a successful
   // callback), the TCPConnectedSocket may outlive the TCPServerSocket that
   // created it.
   //
   // On success, the address of the remote host will be provided.
   Accept(handle<data_pipe_consumer> send_stream,
          handle<data_pipe_producer> receive_stream,
          TCPConnectedSocket& client_socket)
       => (NetworkError result, NetAddress? remote_address);
 };
-
-}