Add systeminfo.storage API implementation skeleton

chrome/test/data/extensions/api_test/systeminfo/storage/test_storage_api.js

Index: chrome/test/data/extensions/api_test/systeminfo/storage/test_storage_api.js
diff --git a/chrome/test/data/extensions/api_test/systeminfo/storage/test_storage_api.js b/chrome/test/data/extensions/api_test/systeminfo/storage/test_storage_api.js
new file mode 100644
index 0000000000000000000000000000000000000000..5b4f834b3db7ee5b4d9d5f568409e52efadd7df0
--- /dev/null
+++ b/chrome/test/data/extensions/api_test/systeminfo/storage/test_storage_api.js
@@ -0,0 +1,16 @@
+// 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.
+
+// systemInfo.storage api test
+// browser_tests.exe --gtest_filter=SystemInfoStorageApiTest.Storage
+chrome.systemInfo = chrome.experimental.systemInfo;
+
+chrome.test.runTests([
+  function testGet() {
+    chrome.systemInfo.storage.get(chrome.test.callbackPass(function(info) {
+      // TODO(hmin): Need to check the value from Mock implementation
+      chrome.test.assertTrue(info.units.length > 0);
+    }));
+  }
+]);