cr-elements fixes for Polymer 0.8

ui/webui/resources/cr_elements/v0_8/cr_input/cr_input.js

 // Copyright 2015 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
  * `cr-input` is a single-line text field for user input. It is a convenience
  * element wrapping `paper-input`.
  *
  * Example:
@@ skipping 23 matching lines @@
       type: Boolean,
       value: false
     },
 
     /**
      * The current value of the input.
      */
     value: {
       type: String,
       value: '',
+      notify: true,
     },
 
     /**
      * The validation pattern for the input.
      */
     pattern: String,
 
     /**
      * The type of the input (password, date, etc.).
      */
@@ skipping 15 matching lines @@
    */
   focus: function() {
     this.$.input.focus();
   },
 
   /** @override */
   ready: function() {
     this.$.events.forward(this.$.input, ['change']);
   },
 });