Import Polymer 0.8 and several key elements.

third_party/polymer/v0_8/components-chromium/paper-behaviors/test/test-button.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
+subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
+-->
+
+<link rel="import" href="../../polymer/polymer.html">
+<link rel="import" href="../paper-button-behavior.html">
+
+<dom-module id="test-button">
+
+  <script>
+
+    Polymer({
+
+      behaviors: [
+        Polymer.PaperButtonBehavior
+      ],
+
+      properties: {
+
+        raised: {
+          type: Boolean,
+          value: false,
+          observer: '_buttonStateChanged'
+        }
+
+      },
+
+      _buttonStateChanged: function() {
+        this._calculateElevation();
+      }
+
+    });
+
+  </script>
+
+</dom-module>