Update references to the extension messaging APIs to point to the "runtime"

chrome/test/data/extensions/api_test/tabs/connect/echo.js

Index: chrome/test/data/extensions/api_test/tabs/connect/echo.js
diff --git a/chrome/test/data/extensions/api_test/tabs/connect/echo.js b/chrome/test/data/extensions/api_test/tabs/connect/echo.js
index 1cab30cd38db8115ef8be5356434a1c41849c576..c2a49285ddbb3a7ef0cc41dd1770efd9b2e11d6b 100644
--- a/chrome/test/data/extensions/api_test/tabs/connect/echo.js
+++ b/chrome/test/data/extensions/api_test/tabs/connect/echo.js
@@ -1,8 +1,12 @@
+// Copyright (c) 2013 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.
+
 // Content script that echoes back all messages.
 // Posting a message with "GET" returns the name and # of connections opened.
 var connections = 0;
 
-chrome.extension.onConnect.addListener(function onConnect(port) {
+chrome.runtime.onConnect.addListener(function onConnect(port) {
   connections++;
   port.onMessage.addListener(function onMessage(msg) {
     if (msg == "GET") {