Eliminate use of assignments to innerHTML in File Browser

chrome/browser/resources/file_manager/js/image_editor/gallery.js

 // Copyright (c) 2011 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.
 
 /*
  * Base class that Ribbon uses to display photos.
  */
 
 function RibbonClient() {}
 
@@ skipping 28 matching lines @@
   this.mouseOverTool_ = false;
 
   this.initDom_(shareActions);
 }
 
 Gallery.prototype = { __proto__: RibbonClient.prototype };
 
 Gallery.open = function(parentDirEntry, items, selectedItem,
    closeCallback, metadataProvider, shareActions, displayStringFunction) {
   var container = document.querySelector('.gallery');
-  container.innerHTML = '';
+  ImageUtil.removeChildren(container);
   var gallery = new Gallery(container, closeCallback, metadataProvider,
       shareActions, displayStringFunction);
   gallery.load(parentDirEntry, items, selectedItem);
 };
 
 Gallery.editorModes = [
   new ImageEditor.Mode.InstantAutofix(),
   new ImageEditor.Mode.Crop(),
   new ImageEditor.Mode.Exposure(),
   new ImageEditor.Mode.OneClick('rotate_left', new Command.Rotate(-1)),
@@ skipping 916 matching lines @@
 ShareMode.prototype.setUp = function() {
   ImageEditor.Mode.prototype.setUp.apply(this, arguments);
   ImageUtil.setAttribute(this.menu_, 'hidden', false);
   ImageUtil.setAttribute(this.button_, 'pressed', false);
 };
 
 ShareMode.prototype.cleanUpUI = function() {
   ImageEditor.Mode.prototype.cleanUpUI.apply(this, arguments);
   ImageUtil.setAttribute(this.menu_, 'hidden', true);
 };