Update Polymer components.

third_party/polymer/components/paper-material/paper-material.html

 <!--
 @license
 Copyright (c) 2015 The Polymer Project Authors. All rights reserved.
 This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
 The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
 The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
 Code distributed by Google as part of the polymer project is also
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@@ skipping 17 matching lines @@
 @demo demo/index.html
 -->
 
 <dom-module id="paper-material">
   <template>
     <style include="paper-material-shared-styles"></style>
     <style>
       :host([animated]) {
         @apply(--shadow-transition);
       }
+      :host {
+        @apply(--paper-material);
+      }
     </style>
 
     <content></content>
   </template>
 </dom-module>
 <script>
   Polymer({
     is: 'paper-material',
 
     properties: {
@@ skipping 21 matching lines @@
        * @default false
        */
       animated: {
         type: Boolean,
         reflectToAttribute: true,
         value: false
       }
     }
   });
 </script>