[Cleanup] Files.app: Add '@constructor' annotates to constructors.

chrome/browser/resources/file_manager/js/photo/importing_dialog.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.
 
 
 /**
  * ImportingDialog manages the import process (which is really a copying).
+ * @constructor
  * @param {HTMLElement} parentNode Node to be parent for this dialog.
  * @param {FileCopyManager} copyManager Copy manager isntance.
  * @param {MetadataCache} metadataCache Metadata cache.
  */
 function ImportingDialog(parentNode, copyManager, metadataCache) {
   cr.ui.dialogs.BaseDialog.call(this, parentNode);
   this.copyManager_ = copyManager;
   this.metadataCache_ = metadataCache;
   this.onCopyProgressBound_ = this.onCopyProgress_.bind(this);
 }
@@ skipping 153 matching lines @@
           loadTimeData.getString('PHOTO_IMPORT_IMPORTING_ERROR');
       this.imageBox_.setAttribute('state', 'error');
       this.frame_.removeChild(this.cancelButton_);
       this.frame_.appendChild(this.okButton_);
       break;
 
     default:
       console.error('Unknown "copy-progress" event reason: ' + event.reason);
   }
 };