Fork PIN keyboard assets and create additional flag for lock screen

chrome/browser/resources/chromeos/login/md_lock.js

Index: chrome/browser/resources/chromeos/login/md_lock.js
diff --git a/chrome/browser/resources/chromeos/login/md_lock.js b/chrome/browser/resources/chromeos/login/md_lock.js
new file mode 100644
index 0000000000000000000000000000000000000000..12493dc05aff50beb2505c6e5d5d30f48403514a
--- /dev/null
+++ b/chrome/browser/resources/chromeos/login/md_lock.js
@@ -0,0 +1,95 @@
+// Copyright (c) 2016 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.
+
+/**
+ * @fileoverview Login UI based on a stripped down OOBE controller.
+ */
+
+// <include src="login_shared.js">
+
+/**
+ * Ensures that the pin keyboard is loaded.
+ * @param {function()} onLoaded Callback run when the pin keyboard is loaded.
+ */
+function ensurePinKeyboardLoaded(onLoaded) {
+  'use strict';
+
+  // The element we want to see if loaded.
+  var getPinKeyboard = function() {
+    return $('pod-row').querySelectorAll('pin-keyboard')[0];
+  };
+
+  // Do not reload assets if they are already loaded. Run |onLoaded| once assets
+  // are done loading, though.
+  if (cr.ui.login.ResourceLoader.hasDeferredAssets('custom-elements')) {
+    cr.ui.login.ResourceLoader.waitUntilLayoutComplete(getPinKeyboard,
+                                                       onLoaded);
+    return;
+  }
+
+  // Register loader for custom elements.
+  cr.ui.login.ResourceLoader.registerAssets({
+    id: 'custom-elements',
+    html: [{ url: 'chrome://oobe/custom_elements.html' }]
+  });
+
+  // We only load the PIN element when it is actually shown so that lock screen
+  // load times remain low when the user is not using a PIN.
+  //
+  // Loading the PIN element blocks the DOM, which will interrupt any running
+  // animations. We load the PIN after an idle notification to allow the pod
+  // fly-in animation to complete without interruption.
+  cr.ui.login.ResourceLoader.loadAssetsOnIdle('custom-elements', function() {
+    cr.ui.login.ResourceLoader.waitUntilLayoutComplete(getPinKeyboard,
+                                                       onLoaded);
+  });
+}
+
+cr.define('cr.ui.Oobe', function() {
+  return {
+    /**
+     * Initializes the OOBE flow.  This will cause all C++ handlers to
+     * be invoked to do final setup.
+     */
+    initialize: function() {
+      cr.ui.login.DisplayManager.initialize();
+      login.AccountPickerScreen.register();
+
+      cr.ui.Bubble.decorate($('bubble'));
+      login.HeaderBar.decorate($('login-header-bar'));
+
+      chrome.send('screenStateInitialize');
+    },
+
+    /**
+     * Notification from the host that the PIN keyboard will be used in the
+     * lock session so it should also get preloaded.
+     */
+    preloadPinKeyboard: function() {
+      ensurePinKeyboardLoaded(function() {});
+    },
+
+    // Dummy Oobe functions not present with stripped login UI.
+    initializeA11yMenu: function(e) {},
+    handleAccessibilityLinkClick: function(e) {},
+    handleSpokenFeedbackClick: function(e) {},
+    handleHighContrastClick: function(e) {},
+    handleScreenMagnifierClick: function(e) {},
+    setUsageStats: function(checked) {},
+    setOemEulaUrl: function(oemEulaUrl) {},
+    setTpmPassword: function(password) {},
+    refreshA11yInfo: function(data) {},
+    reloadEulaContent: function(data) {},
+
+    /**
+     * Reloads content of the page.
+     * @param {!Object} data New dictionary with i18n values.
+     */
+    reloadContent: function(data) {
+      loadTimeData.overrideValues(data);
+      i18nTemplate.process(document, loadTimeData);
+      Oobe.getInstance().updateLocalizedContent_();
+    },
+  };
+});