Convert another batch of extension tests to manifest_version 2

chrome/test/data/extensions/api_test/websocket/test.html

-<script>
-chrome.test.runTests([
-  function echoTest() {
-    var ws = new WebSocket(
-        "ws://localhost:8880/websocket/tests/hybi/workers/resources/echo");
-    var MESSAGE_A = "message a";
-    var MESSAGE_B = "message b";
-
-    ws.onopen = function() {
-      chrome.test.log("websocket opened.");
-      ws.send(MESSAGE_A);
-    };
-
-    ws.onclose = function() {
-      chrome.test.log("websocket closed.");
-    }
-
-    ws.onmessage = function(messageEvent) {
-      chrome.test.log("message received: " + messageEvent.data);
-      chrome.test.assertEq(MESSAGE_A, messageEvent.data);
-
-      ws.onmessage = function(messageEvent) {
-        chrome.test.log("message received: " + messageEvent.data);
-        chrome.test.assertEq(MESSAGE_B, messageEvent.data);          
-        ws.close();
-
-        chrome.test.succeed();
-      };
-
-      ws.send(MESSAGE_B);
-    };
-  }
-]);
-</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>