Convert another batch of extension tests to manifest_version 2

chrome/test/data/extensions/api_test/window_update/focus/test.html

-<script>
-var pass = chrome.test.callbackPass;
-
-var previousTop = 0;
-var left = 0;
-var width = 0;
-var height = 0;
-
-var chromeWindow = null;
-
-function checkDimensions(currentWindow) {
-  chrome.test.assertEq(previousTop, currentWindow.top);
-  chrome.test.assertEq(left, currentWindow.left);
-  chrome.test.assertEq(width, currentWindow.width);
-  chrome.test.assertEq(height, currentWindow.height);
-}
-
-function setFocus(tab) {
-  previousTop = chromeWindow.top;
-  left = chromeWindow.left;
-  width = chromeWindow.width;
-  height = chromeWindow.height;
-
-  chrome.windows.update(
-    chromeWindow.id, { 'focused': true },
-    pass(checkDimensions)
-  );
-}
-
-chrome.test.runTests([
-  function setFocusWithNoResize() {
-    chrome.windows.getCurrent(
-      pass(function(currentWindow) {
-        chromeWindow = currentWindow;
-        chrome.tabs.create(
-          { 'windowId': currentWindow.id, 'url': 'blank.html' },
-          pass(setFocus)
-        );
-    }));
-  }
-]);
-</script>
+<!--
+ * 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.
+-->
+<script src="test.js"></script>