Implement chrome.socket.bind/listen/accept for TCP server socket.

chrome/test/data/extensions/api_test/socket/experimental/background.js

+// Copyright (c) 2012 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.
+
+const socket = chrome.socket;
+var sid;
+
+var onAccept = function(acceptInfo) {

[miket_OOO, 2012/09/26 21:02:44]

Perfect. For the sanity of future engineers in this file, how about a comment
right here explaining that this should be undefined because the manifest is
failing to declare experimental? It's obvious to you and me, but I'll surely
have forgotten in two weeks.

[justinlin, 2012/09/26 23:03:57]

Done. :)

+  chrome.test.assertEq(undefined, acceptInfo);
+  chrome.test.succeed();
+};
+
+var onListen = function(result) {
+  chrome.test.assertEq(undefined, result);
+  socket.accept(sid, onAccept);
+};
+
+var onCreate = function(socketInfo) {
+  sid = socketInfo.socketId;
+  socket.listen(sid, '127.0.0.1', 1234, onListen);
+};
+
+var onMessageReply = function() {
+  socket.create('tcp', {}, onCreate);
+};
+
+chrome.test.sendMessage("ready", onMessageReply);