Update Polymer components.

third_party/polymer/components/iron-fit-behavior/iron-fit-behavior.html

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       <div class="container">
         <iron-fit-impl vertical-align="top" vertical-offset="20">
           With vertical offset
         </iron-fit-impl>
       </div>
 
 
 @demo demo/index.html
 @polymerBehavior
 */
-
   Polymer.IronFitBehavior = {
 
     properties: {
 
       /**
        * The element that will receive a `max-height`/`width`. By default it is the same as `this`,
        * but it can be set to a child element. This is useful, for example, for implementing a
        * scrolling region inside the element.
        * @type {!Element}
        */
@@ skipping 532 matching lines @@
         if (position.croppedArea === 0 && alignOk) {
           break;
         }
       }
 
       return position;
     }
 
   };
 </script>