Suppressed resizing when the preview panel shows and hides.

chrome/browser/resources/file_manager/js/file_selection.js

 // Copyright (c) 2012 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.
 
 'use strict';
 
 /**
  * The current selection object.
  *
  * @param {FileManager} fileManager FileManager instance.
@@ skipping 304 matching lines @@
  */
 FileSelectionHandler.prototype.updatePreviewPanelVisibility_ = function() {
   var panel = this.previewPanel_;
   var state = panel.getAttribute('visibility');
   var mustBeVisible = (this.selection.totalCount > 0);
   if (util.platform.newUI()) {
     mustBeVisible = (this.selection.totalCount > 0 ||
         !PathUtil.isRootPath(this.fileManager_.getCurrentDirectory()));
   }
   var self = this;
-  var fm = this.fileManager_;
 
   var stopHidingAndShow = function() {
     clearTimeout(self.hidingTimeout_);
     self.hidingTimeout_ = 0;
     setVisibility('visible');
   };
 
   var startHiding = function() {
     setVisibility('hiding');
     self.hidingTimeout_ = setTimeout(function() {
         self.hidingTimeout_ = 0;
         setVisibility('hidden');
-        fm.onResize_();
       }, 250);
   };
 
   var show = function() {
     setVisibility('visible');
     self.previewThumbnails_.textContent = '';
-    fm.onResize_();
   };
 
   var setVisibility = function(visibility) {
     panel.setAttribute('visibility', visibility);
   };
 
   switch (state) {
     case 'visible':
       if (!mustBeVisible)
         startHiding();
@@ skipping 396 matching lines @@
   style.left = (boxWidth - imageWidth) / 2 + 'px';
   style.top = (boxHeight - imageHeight) / 2 + 'px';
   style.position = 'relative';
 
   util.applyTransform(largeImage, transform);
 
   largeImageBox.appendChild(largeImage);
   largeImageBox.style.zIndex = 1000;
   return true;
 };