Create a common directory of widgets and css.

appengine/chromium_rietveld/new_static/components/cr-app.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. -->
 
 <!-- TODO(esprehn): Can we use the non full version of sugar? -->
 <script src="../bower_components/sugar/release/sugar-full.min.js"></script>
 
 <link rel="import" href="../bower_components/polymer/polymer.html">
 <link rel="import" href="../bower_components/app-router/app-router.html">
 
@@ skipping 22 matching lines @@
 <script src="../model/patch_set.js"></script>
 <script src="../model/search.js"></script>
 <script src="../model/search_result.js"></script>
 <script src="../model/try_job_result.js"></script>
 <script src="../model/try_job_result_set.js"></script>
 <script src="../model/try_job_result_step.js"></script>
 <script src="../model/try_servers.js"></script>
 <script src="../model/user.js"></script>
 <script src="../model/user_settings.js"></script>
 
-<link rel="import" href="cr-action.html">
-<link rel="import" href="cr-title-handler.html">
-<link rel="import" href="cr-view-handler.html">
+<link rel="import" href="../common/cr-action.html">
+<link rel="import" href="../common/cr-title-handler.html">
+<link rel="import" href="../common/cr-view-handler.html">
 
 <link rel="import" href="../views/cr-inbox-view.html">
 <link rel="import" href="../views/cr-issue-view.html">
 <link rel="import" href="../views/cr-search-view.html">
 <link rel="import" href="../views/cr-settings-view.html">
 <link rel="import" href="../views/cr-user-view.html">
 
 <polymer-element name="cr-app" on-navigate="{{ handleNavigate }}" on-login="{{ handleLogin }}">
     <template>
         <cr-view-handler></cr-view-handler>
         <cr-title-handler titlesuffix="Code Review"></cr-title-handler>
-        <link rel="stylesheet" href="common.css">
+        <link rel="stylesheet" href="../common/common.css">
         <style>
             :host { display: block; }
 
             .page-header {
                 background-color: #212121;
                 font-size: 1.1em;
                 -webkit-user-select: none;
                 cursor: default;
                 display: -webkit-flex;
                 display: flex;
@@ skipping 104 matching lines @@
             },
             handleLogin: function() {
                 if (this.user)
                     location.href = User.getLogoutUrl();
                 else
                     location.href = User.getLoginUrl();
             },
         });
     </script>
 </polymer-element>