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

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

Index: chrome/test/data/extensions/lock_screen_apps/non_lock_screen_context/background.js
diff --git a/chrome/test/data/extensions/lock_screen_apps/non_lock_screen_context/background.js b/chrome/test/data/extensions/lock_screen_apps/non_lock_screen_context/background.js
new file mode 100644
index 0000000000000000000000000000000000000000..52d74420589ae8fb7060ec13462e456b3787164c
--- /dev/null
+++ b/chrome/test/data/extensions/lock_screen_apps/non_lock_screen_context/background.js
@@ -0,0 +1,21 @@
+// 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) {
+  if (data.actionData.isLockScreenAction)
+    return;
+
+  chrome.test.runTests([
+    function launchTest() {
+      chrome.test.assertTrue(!!data);
+      chrome.test.assertTrue(!!data.actionData);
+      chrome.test.assertEq('new_note', data.actionData.actionType);
+
+      chrome.app.window.create('test.html', {
+        lockScreenAction: 'new_note'
+      }, chrome.test.callbackFail(
+            'The lockScreenAction option requires lock screen app context.'));
+    },
+  ]);
+});