[SystemInfo API] Move Storage API out of experimental namespace and rename to the "system" namespace

chrome/test/data/extensions/api_test/systeminfo/storage_eject/test.js

-// Copyright 2013 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 attachedDeviceId;
-
-systemInfo = chrome.experimental.systemInfo;
-
-function testAttach(details) {
-  attachedDeviceId = details.id;
-  chrome.test.sendMessage('attach_test_ok,' + details.name);
-};
-
-function ejectCallback(result) {
-  if (result == "success") {
-    chrome.test.sendMessage("eject_ok");
-  } else if (result == "in_use") {
-    chrome.test.sendMessage("eject_in_use");
-  } else if (result == "no_such_device") {
-    chrome.test.sendMessage("eject_no_such_device");
-  } else {
-    chrome.test.sendMessage("eject_failure");
-  }
-};
-
-function ejectTest() {
-  systemInfo.storage.ejectDevice(attachedDeviceId, ejectCallback);
-};
-
-function addAttachListener() {
-  systemInfo.storage.onAttached.addListener(testAttach);
-  chrome.test.sendMessage('add_attach_ok');
-};
-
-function removeAttachListener() {
-  systemInfo.storage.onAttached.removeListener(testAttach);
-  chrome.test.sendMessage('remove_attach_ok');
-};
-
-function ejectFailTest() {
-  systemInfo.storage.ejectDevice('-1', ejectCallback);
-};