MD User Manager: Display error message when all profiles are locked.

chrome/browser/resources/md_user_manager/error_dialog.js

+// Copyright 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 'error-dialog' is a popup dialog that displays error messages
+ * in the user manager.
+ */
+(function() {
+Polymer({
+  is: 'error-dialog',
+
+  properties: {
+    /**
+     * True if the element is currently hidden.
+     * @private {boolean}
+     */
+    popupHidden_: {
+      type: Boolean,
+      value: true
+    },
+
+    /**
+     * The message shown in the dialog.
+     * @private {string}
+     */
+    message_: {
+      type: String,
+      value: ''
+    }
+  },
+
+  /**
+   * Displays the popup populated with the given message.
+   * @param {string} message Error message to show.
+   */
+  show: function(message) {
+    this.message_ = message;
+    this.popupHidden_ = false;
+
+    this.async(function() {
+      this.$$('paper-icon-button').focus();
+    }.bind(this));
+  },
+
+  /**
+   * Hides the popup.
+   * @private
+   */
+  onCloseTap_: function() {
+    this.popupHidden_ = true;
+  }
+});
+})();