[third_party] add polymer 1.2.3

polymer_1.2.3/bower_components/iron-fit-behavior/demo/simple-fit.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="../iron-fit-behavior.html">
-<link rel="import" href="../../paper-styles/paper-styles.html">
+<link rel="import" href="../../paper-styles/color.html">
+<link rel="import" href="../../iron-flex-layout/iron-flex-layout.html">
 
 <dom-module id="simple-fit">
 
   <style>
     :host {
       @apply(--layout);
-      
+
       background-color: var(--paper-light-blue-500);
       color: white;
       text-align: center;
 
       align-items:center;
       -webkit-align-items: center;
 
       justify-content:center;
       -webkit-justify-content:center;
     }
@@ skipping 11 matching lines @@
 
     is: 'simple-fit',
 
     behaviors: [
       Polymer.IronFitBehavior
     ]
 
   });
 
 </script>