Add type annotations to gallery/js/image_editor/image_view.js.

ui/file_manager/gallery/js/image_editor/image_buffer.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.
 
 /**
  * A stack of overlays that display itself and handle mouse events.
  * TODO(kaznacheev) Consider disbanding this class and moving
  * the functionality to individual objects that display anything or handle
  * mouse events.
  * @constructor
@@ skipping 105 matching lines @@
  */
 ImageBuffer.DoubleTapAction = {
   NOTHING: 0,
   COMMIT: 1,
   CANCEL: 2
 };
 
 /**
  * ImageBuffer.Overlay is a pluggable extension that modifies the outlook
  * and the behavior of the ImageBuffer instance.
- * @class
+ * @constructor
+ * @struct
  */
 ImageBuffer.Overlay = function() {};
 
 /**
  * TODO(JSDOC).
  * @return {number}  // TODO(JSDOC).
  */
 ImageBuffer.Overlay.prototype.getZIndex = function() { return 0; };
 
 /**
@@ skipping 36 matching lines @@
 
 /**
  * TODO(JSDOC).
  * @param {number} x  // TODO(JSDOC).
  * @param {number} y  // TODO(JSDOC).
  * @return {ImageBuffer.DoubleTapAction}  // TODO(JSDOC).
  */
 ImageBuffer.Overlay.prototype.getDoubleTapAction = function(x, y) {
   return ImageBuffer.DoubleTapAction.NOTHING;
 };