Remove file-level 'use strict' from file_manager.

ui/file_manager/gallery/js/image_editor/commands.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';
-
 /**
  * Command queue is the only way to modify images.
  * Supports undo/redo.
  * Command execution is asynchronous (callback-based).
  *
  * @param {Document} document Document to create canvases in.
  * @param {HTMLCanvasElement} canvas The canvas with the original image.
  * @param {function(function())} saveFunction Function to save the image.
  * @constructor
  */
@@ skipping 427 matching lines @@
 
   function onProgressInvisible(updatedRow, rowCount) {
     if (updatedRow == rowCount) {
       callback(result);
     }
   }
 
   filter.applyByStrips(result, srcCanvas, this.filter_,
       uiContext.imageView ? onProgressVisible : onProgressInvisible);
 };