Compile Image Editor in gyp v2

ui/file_manager/gallery/js/thumbnail_mode.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.
 
 /**
  * Thumbnail Mode.
  * @param {!HTMLElement} container A container.
  * @param {!ErrorBanner} errorBanner Error banner.
  * @param {!GalleryDataModel} dataModel Gallery data model.
  * @param {!cr.ui.ListSelectionModel} selectionModel List selection model.
@@ skipping 425 matching lines @@
  * Scrolls viewport to show the thumbnail of the index.
  * @param {number} index Index of a thumbnail which becomes to appear in the
  *     viewport.
  * @private
  *
  * TODO(yawano): Add scroll animation.
  */
 ThumbnailView.prototype.scrollTo_ = function(index) {
   var thumbnailRect = this.getThumbnailRect(index);
 
-  if (thumbnailRect.top - ThumbnailView.MARGIN < ImageEditor.Toolbar.HEIGHT) {
+  if (thumbnailRect.top - ThumbnailView.MARGIN < ImageEditorToolbar.HEIGHT) {
     this.container_.scrollTop -=
-        ImageEditor.Toolbar.HEIGHT - thumbnailRect.top + ThumbnailView.MARGIN;
+        ImageEditorToolbar.HEIGHT - thumbnailRect.top + ThumbnailView.MARGIN;
   } else if (thumbnailRect.bottom + ThumbnailView.MARGIN >
       this.container_.clientHeight) {
     this.container_.scrollTop += thumbnailRect.bottom + ThumbnailView.MARGIN -
         this.container_.clientHeight;
   }
 };
 
 /**
  * Updates scroll bar.
  * @private
@@ skipping 559 matching lines @@
     };
     }.bind(this, this.thumbnailLoadRequestId_))
     .catch(function(requestId, error) {
       if (requestId !== this.thumbnailLoadRequestId_)
         return null;
 
       this.setError_(error);
       return null;
     }.bind(this, this.thumbnailLoadRequestId_));
 };