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

chrome/test/data/extensions/good/Extensions/bjafgdebaacbbbecmhlhpofkepfkgcpa/1.0/page.js

 // Copyright (c) 2011 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.
 
 var win = window;
 if (typeof(contentWindow) != 'undefined') {
   win = contentWindow;
 }
 
-chrome.extension.onConnect.addListener(function(port) {
+chrome.runtime.onConnect.addListener(function(port) {
   console.log('connected');
   port.onMessage.addListener(function(msg) {
     console.log('got ' + msg);
     if (msg.testPostMessage) {
       port.postMessage({success: true});
     } else if (msg.testPostMessageFromTab) {
       testPostMessageFromTab(port);
     } else if (msg.testDisconnect) {
       port.disconnect();
     } else if (msg.testDisconnectOnClose) {
       win.location = "about:blank";
     } else if (msg.testPortName) {
       port.postMessage({portName:port.name});
     }
     // Ignore other messages since they are from us.
   });
 });
 
 // Tests that postMessage to the extension and its response works.
 function testPostMessageFromTab(origPort) {
   console.log('testPostMessageFromTab');
   var portName = "peter";
-  var port = chrome.extension.connect({name: portName});
+  var port = chrome.runtime.connect({name: portName});
   port.postMessage({testPostMessageFromTab: true});
   port.onMessage.addListener(function(msg) {
     origPort.postMessage({success: (msg.success && (msg.portName == portName))});
     console.log('sent ' + msg.success);
     port.disconnect();
   });
   console.log('posted message');
 }
 
 // Workaround two bugs: shutdown crash if we hook 'unload', and content script
 // GC if we don't register any event handlers.
 // http://code.google.com/p/chromium/issues/detail?id=17410
 // http://code.google.com/p/chromium/issues/detail?id=17582
 function foo() {}
 win.addEventListener('error', foo);