Run PRESUBMIT checks over existing files in html-office-public

elements/viewer-button/viewer-button.html

 <polymer-element name="viewer-button" attributes="src latchable">
-  <template>
-    <link rel="stylesheet" href="viewer-button.css">
-    <div id="icon"></div>
-  </template>
-  <script>
-    (function() {
+<template>
+  <link rel="stylesheet" href="viewer-button.css">
+  <div id="icon"></div>
+</template>
+<script>
+  (function() {
     var dpi = '';
 
     Polymer('viewer-button', {
       src: '',
       latchable: false,
       ready: function() {
         if (!dpi) {
           var mql = window.matchMedia('(-webkit-min-device-pixel-ratio: 1.3');
           dpi = mql.matches ? 'hi' : 'low';
         }
       },
       srcChanged: function() {
         if (this.src) {
           this.$.icon.style.backgroundImage =
               'url(' + this.getAttribute('assetpath') + 'img/' + dpi +
-                  'DPI/' + this.src + ')';
+              'DPI/' + this.src + ')';
         } else {
           this.$.icon.style.backgroundImage = '';
         }
       },
       latchableChanged: function() {
         if (this.latchable)
           this.classList.add('latchable');
         else
           this.classList.remove('latchable');
       },
     });
-    })();
-  </script>
+  })();
+</script>
 </polymer-element>