Added JavaScript API Test for getFileSyncStatus() function.

chrome/test/data/extensions/api_test/sync_file_system/get_file_sync_status/test.js

Index: chrome/test/data/extensions/api_test/sync_file_system/get_file_sync_status/test.js
diff --git a/chrome/test/data/extensions/api_test/sync_file_system/get_file_sync_status/test.js b/chrome/test/data/extensions/api_test/sync_file_system/get_file_sync_status/test.js
new file mode 100644
index 0000000000000000000000000000000000000000..556a10b9feb0a0893fa77408612d9b987c0c21aa
--- /dev/null
+++ b/chrome/test/data/extensions/api_test/sync_file_system/get_file_sync_status/test.js
@@ -0,0 +1,31 @@
+// Copyright (c) 2012 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 testStep = [
+  function() {
+    chrome.syncFileSystem.requestFileSystem('drive', testStep.shift());
+  },
+  // Create empty file.
+  function(fileSystem) {
+    fileSystem.root.getFile('Test.txt', {create: true}, testStep.shift(),
+        errorHandler);
+  },
+  // Confirm file is conflicting as this is the mocked value.
+  function(fileEntry) {
+    chrome.syncFileSystem.getFileSyncStatus(fileEntry, testStep.shift());
+  },
+  function(fileSyncStatus) {
+    chrome.test.assertEq("conflicting", fileSyncStatus);
+    chrome.test.succeed();
+  }
+];
+
+function errorHandler(e) {
+  console.log("Failed test with error" + e);
+  chrome.test.fail();
+}
+
+chrome.test.runTests([
+  testStep.shift()
+]);