Move another block of extension tests to manifest_version 2

chrome/test/data/extensions/api_test/proxy/events/invalid_proxy.html

-<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.
-
-// proxy api test
-// browser_tests.exe --gtest_filter=ProxySettingsApiTest.ProxyEventsInvalidProxy
-
-var expected_error = {
-    error: "net::ERR_PROXY_CONNECTION_FAILED",
-    details: "",
-    fatal: true
-};
-var empty_json_url = "";
-
-function test() {
-  // Install error handler and get the test server config.
-  chrome.proxy.onProxyError.addListener(function (error) {
-    chrome.test.assertEq(expected_error, error);
-    chrome.test.notifyPass();
-  });
-  chrome.test.getConfig(readConfigAndSetProxy);
-}
-
-function readConfigAndSetProxy(test_config) {
-  // Construct the URL used for XHRs and set the proxy settings.
-  empty_json_url = "http://127.0.0.1:" +
-      test_config.testServer.port +
-      "/files/extensions/api_test/proxy/events/empty.json";
-
-  // Set an invalid proxy and fire of a XHR. This should trigger proxy errors.
-  // There may be any number of proxy errors, as systems like safe browsing
-  // might start network traffic as well.
-  var rules = {
-    singleProxy: { host: "does.not.exist" }
-  };
-  var config = { rules: rules, mode: "fixed_servers" };
-  chrome.proxy.settings.set({'value': config}, sendFailingXHR);
-}
-
-function sendFailingXHR() {
-  var req = new XMLHttpRequest();
-  req.open("GET", empty_json_url, true);
-  req.onload = function () {
-    chrome.test.notifyFail("proxy settings should not work");
-  }
-  req.onerror = testDone;
-  req.send(null);
-}
-
-function testDone() {
- // Do nothing. The test success/failure is decided in the event handler.
-}
-
-test();
-</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="invalid_proxy.js"></script>