MD Downloads: remove per-item scrollbarWidth handling

chrome/browser/resources/md_downloads/manager.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 Manager = Polymer({
     is: 'downloads-manager',
 
     created: function() {
       /** @private {!downloads.ActionService} */
       this.actionService_ = new downloads.ActionService;
     },
 
     properties: {
       hasDownloads_: {
         type: Boolean,
         value: false,
       },
     },
 
-    ready: function() {
-      window.addEventListener('resize', this.onResize_.bind(this));
-      // onResize_() doesn't need to be called immediately here because it's
-      // guaranteed to be called again shortly when items are received.
-    },
-
     /**
      * @return {number} A guess at how many items could be visible at once.
      * @private
      */
     guesstimateNumberOfVisibleItems_: function() {
       var toolbarHeight = this.$.toolbar.offsetHeight;
       return Math.floor((window.innerHeight - toolbarHeight) / 46) + 1;
     },
 
     /**
@@ skipping 29 matching lines @@
 
       cr.ui.decorate('command', cr.ui.Command);
       document.addEventListener('canExecute', this.onCanExecute_.bind(this));
       document.addEventListener('command', this.onCommand_.bind(this));
 
       // Shows all downloads.
       this.actionService_.search('');
     },
 
     /** @private */
-    onResize_: function() {
-      // TODO(dbeam): expose <paper-header-panel>'s #mainContainer in Polymer.
-      var container = this.$.panel.$.mainContainer;
-      var scrollbarWidth = container.offsetWidth - container.clientWidth;
-      this.items_.forEach(function(item) {
-        item.scrollbarWidth = scrollbarWidth;
-      });
-    },
-
-    /** @private */
     rebuildFocusGrid_: function() {
       var activeElement = this.shadowRoot.activeElement;
 
       var activeItem;
       if (activeElement && activeElement.tagName == 'download-item')
         activeItem = activeElement;
 
       var activeControl = activeItem && activeItem.shadowRoot.activeElement;
 
       /** @private {!cr.ui.FocusGrid} */
@@ skipping 83 matching lines @@
         }
         // If |before| is null, |item| will just get added at the end.
         this.$['downloads-list'].insertBefore(item, before);
       }
 
       this.hasDownloads_ = this.size_() > 0;
 
       if (loadTimeData.getBoolean('allowDeletingHistory'))
         this.$.toolbar.downloadsShowing = this.hasDownloads_;
 
-      this.onResize_();
       this.$.panel.classList.remove('loading');
 
       var allReady = this.items_.map(function(i) { return i.readyPromise; });
       Promise.all(allReady).then(this.rebuildFocusGrid_.bind(this));
     },
 
     /**
      * @param {!downloads.Data} data
      * @private
      */
     updateItem_: function(data) {
       var item = this.idMap_[data.id];
 
       var activeControl = this.shadowRoot.activeElement == item ?
           item.shadowRoot.activeElement : null;
 
       item.update(data);
 
       if (activeControl && !cr.ui.FocusRow.isFocusable(activeControl)) {
         var focusRow = this.focusGrid_.getRowForRoot(item.content);
         focusRow.getEquivalentElement(activeControl).focus();
       }
-
-      this.onResize_();
     },
   });
 
   Manager.size = function() {
     return document.querySelector('downloads-manager').size_();
   };
 
   Manager.updateAll = function(list) {
     document.querySelector('downloads-manager').updateAll_(list);
   };
 
   Manager.updateItem = function(item) {
     document.querySelector('downloads-manager').updateItem_(item);
   };
 
   Manager.onLoad = function() {
     document.querySelector('downloads-manager').onLoad_();
   };
 
   return {Manager: Manager};
 });
 
 window.addEventListener('load', downloads.Manager.onLoad);