Add hooks to allow lock screen app pages in sign-in profile

chrome/test/data/extensions/lock_screen_apps/app_launch/background.js

+// Copyright 2017 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.
+
+chrome.app.runtime.onLaunched.addListener(function(data) {
+  chrome.test.runTests([
+    function launchTest() {
+      chrome.test.assertTrue(!!data);
+      chrome.test.assertTrue(!!data.actionData);
+      chrome.test.assertEq('new_note', data.actionData.actionType);
+      chrome.test.assertTrue(data.actionData.isLockScreenAction);
+
+      chrome.app.window.create('test.html', {
+        lockScreenAction: 'new_note'
+      }, chrome.test.callbackPass(function(createdWindow) {
+        chrome.test.listenOnce(createdWindow.onClosed,
+                               chrome.test.callbackPass(function() {}));
+      }));
+    },
+
+    function cannotCreateWindowWithoutActionLaunch() {
+      chrome.app.window.create('test.html', {
+        lockScreenAction: 'new_note'
+      }, chrome.test.callbackFail('Failed to create the app window.'));
+    },
+
+    function noIdentityAccess() {
+      chrome.test.assertTrue(!chrome.identity);
+      chrome.test.succeed();
+    },
+  ]);
+});