[Cleanup] Files.app: Adds missing periods at the end of the descriptions.

chrome/browser/resources/file_manager/js/media/media_util.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.
 
 /**
  * Loads a thumbnail using provided url. In CANVAS mode, loaded images
  * are attached as <canvas> element, while in IMAGE mode as <img>.
  * <canvas> renders faster than <img>, however has bigger memory overhead.
  *
  * @param {string} url File URL.
@@ skipping 73 matching lines @@
 ThumbnailLoader.LoaderType = {
   IMAGE: 0,
   CANVAS: 1
 };
 
 /**
  * If an image file does not have an embedded thumbnail we might want to use
  * the image itself as a thumbnail. If the image is too large it hurts
  * the performance a lot so we allow it only for moderately sized files.
  *
- * @param {Object} metadata Metadata object
+ * @param {Object} metadata Metadata object.
  * @return {boolean} Whether it is OK to use the image url for a preview.
  * @private
  */
 ThumbnailLoader.canUseImageUrl_ = function(metadata) {
   return (metadata.filesystem && metadata.filesystem.size &&
       metadata.filesystem.size <= ThumbnailLoader.MAX_FILE_SIZE) ||
      (metadata.media && metadata.media.width && metadata.media.height &&
       metadata.media.width * metadata.media.height <=
           ThumbnailLoader.MAX_PIXEL_COUNT);
 };
@@ skipping 205 matching lines @@
 
   function percent(fraction) {
     return (fraction * 100).toFixed(2) + '%';
   }
 
   img.style.width = percent(fractionX);
   img.style.height = percent(fractionY);
   img.style.left = percent((1 - fractionX) / 2);
   img.style.top = percent((1 - fractionY) / 2);
 };