MD Downloads: remove per-item scrollbarWidth handling

chrome/browser/resources/md_downloads/item.js

 // Copyright 2015 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.
 
 cr.define('downloads', function() {
   var Item = Polymer({
     is: 'downloads-item',
 
     /**
      * @param {!downloads.ThrottledIconLoader} iconLoader
@@ skipping 16 matching lines @@
 
       readyPromise: {
         type: Object,
         value: function() {
           return new Promise(function(resolve, reject) {
             this.resolveReadyPromise_ = resolve;
           }.bind(this));
         },
       },
 
-      scrollbarWidth: {
-        observer: 'onScrollbarWidthChange_',
-        type: Number,
-        value: 0,
-      },
-
       completelyOnDisk_: {
         computed: 'computeCompletelyOnDisk_(' +
             'data_.state, data_.file_externally_removed)',
         type: Boolean,
         value: true,
       },
 
       i18n_: {
         readOnly: true,
         type: Object,
@@ skipping 267 matching lines @@
     onRetryClick_: function() {
       this.actionService_.download(this.$['file-link'].href);
     },
 
     /** @private */
     onSaveDangerous_: function() {
       this.actionService_.saveDangerous(this.data_.id);
     },
 
     /** @private */
-    onScrollbarWidthChange_: function() {
-      if (!this.$)
-        return;
-
-      var endCap = this.$['end-cap'];
-      endCap.style.flexBasis = '';
-
-      if (this.scrollbarWidth) {
-        var basis = parseInt(getComputedStyle(endCap).flexBasis, 10);
-        endCap.style.flexBasis = basis - this.scrollbarWidth + 'px';
-      }
-    },
-
-    /** @private */
     onShowClick_: function() {
       this.actionService_.show(this.data_.id);
     },
   });
 
   return {Item: Item};
 });