Add PolymerElements/paper-item and run reproduce.sh

third_party/polymer/v0_8/components/paper-item/paper-item.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-styles/paper-styles.html">
+
+<!--
+`paper-item` is a non-interactive list item.
+
+@element paper-item
+-->
+
+<dom-module id="paper-item">
+
+  <link rel="import" type="css" href="paper-item-shared.css">
+
+  <style>
+
+    :host {
+      mixin(--layout-horizontal);
+      mixin(--layout-center);
+      mixin(--paper-font-subhead);
+
+      mixin(--paper-item);
+    }
+
+  </style>
+
+  <template>
+    <content></content>
+  </template>
+
+</dom-module>
+
+<script>
+
+(function() {
+
+  Polymer({
+
+    is: 'paper-item',
+
+    enableCustomStyleProperties: true,
+
+    hostAttributes: {
+      role: 'listitem'
+    }
+
+  });
+
+})();
+
+</script>