Create a common directory of widgets and css.

appengine/chromium_rietveld/new_static/components/cr-try-results.html

 <!-- Copyright (c) 2014 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. -->
 
 <polymer-element name="cr-try-results" attributes="results">
     <template>
-        <link rel="stylesheet" href="common.css">
+        <link rel="stylesheet" href="../common/common.css">
         <style>
             :host {
                 display: block;
             }
 
             #builders {
                 display: -webkit-flex;
                 display: flex;
                 flex-wrap: wrap;
                 -webkit-flex-wrap: wrap;
@@ skipping 65 matching lines @@
         </div>
     </template>
     <script>
         Polymer("cr-try-results", {
             created: function() {
                 this.results = null;
             },
         });
     </script>
 </polymer-element>