Gallery.app: Do not create images for each operation.

ui/file_manager/gallery/js/gallery_item.js

 // Copyright 2014 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';
 
 /**
  * Object representing an image item (a photo).
  *
  * @param {FileEntry} entry Image entry.
  * @param {function():Promise} fethcedMediaProvider Function to provide the
  *     fetchedMedia metadata.
  * @constructor
  */
-Gallery.Item = function(entry, metadata, metadataCache) {
+Gallery.Item = function(entry, metadata, metadataCache, original) {
   /**
    * @type {FileEntry}
    * @private
    */
   this.entry_ = entry;
 
   /**
    * @type {Object}
    * @private
    */
   this.metadata_ = Object.freeze(metadata);
 
   /**
    * @type {MetadataCache}
    */
   this.metadataCache_ = metadataCache;
 
   /**
    * @type {boolean}
    * @private
    */
-  this.original_ = true;
+  this.original_ = original;
 
   Object.seal(this);
 };
 
 /**
  * @return {FileEntry} Image entry.
  */
 Gallery.Item.prototype.getEntry = function() { return this.entry_; };
 
 /**
@@ skipping 232 matching lines @@
         return Promise.reject(str('GALLERY_FILE_EXISTS'));
       }, function() {
         return new Promise(
             this.entry_.moveTo.bind(this.entry_, parentDirectory, newFileName));
       }.bind(this));
     }.bind(this));
   }.bind(this)).then(function(entry) {
     this.entry_ = entry;
   }.bind(this));
 };