Move yet another block of tests to manifest_version 2

chrome/test/data/extensions/api_test/local_filesystem/background.html

-<script>
-  var fileSystem = null;
-  var testDirName = "tmp/test_dir_" + Math.floor(Math.random()*10000);
-  var testFileName = "test_file_" + Math.floor(Math.random()*10000);
-
-  // Get local FS, create dir with a file in it.
-  console.log("Requesting local file system...");
-  chrome.fileBrowserPrivate.requestLocalFileSystem(getFileSystem);
-
-  function getFileSystem(fs, error) {
-    if (!fs) {
-      errorCallback(error);
-      return;
-    }
-    fileSystem = fs;
-    console.log("DONE requesting local filesystem: " + fileSystem.name);
-    console.log("Creating directory : " + testDirName);
-    fileSystem.root.getDirectory(testDirName, {create:true},
-                                 directoryCallback, errorCallback);
-  }
-
-  function directoryCallback(directory) {
-    console.log("DONE creating directory: " + directory.fullPath);
-    directory.getFile(testFileName, {create:true}, fileCallback, errorCallback);
-  }
-
-  function fileCallback(file) {
-    console.log("DONE creating file: " + file.fullPath);
-
-    // See if we can access this filesystem and its elements in the tab.
-    console.log("Opening tab...");
-    chrome.tabs.create({
-      url: "tab.html#" + escape(testDirName + "/" + testFileName)
-    });
-  }
-
-function errorCallback(e) {
-  var msg = '';
-  switch (e.code) {
-    case FileError.QUOTA_EXCEEDED_ERR:
-      msg = 'QUOTA_EXCEEDED_ERR';
-      break;
-    case FileError.NOT_FOUND_ERR:
-      msg = 'NOT_FOUND_ERR';
-      break;
-    case FileError.SECURITY_ERR:
-      msg = 'SECURITY_ERR';
-      break;
-    case FileError.INVALID_MODIFICATION_ERR:
-      msg = 'INVALID_MODIFICATION_ERR';
-      break;
-    case FileError.INVALID_STATE_ERR:
-      msg = 'INVALID_STATE_ERR';
-      break;
-    default:
-      msg = 'Unknown Error';
-      break;
-  };
-  chrome.test.fail("Got unexpected error: " + msg);
-  console.log('Error: ' + msg);
-  alert('Error: ' + msg);
-}
-</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="background.js"></script>