WebUI: Enable ESLint rule for missing semicolons.

chrome/browser/resources/md_bookmarks/dnd_manager.js

 // Copyright 2017 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.
 
 cr.define('bookmarks', function() {
   /**
    * @param {BookmarkElement} element
    * @return {boolean}
    */
   function isBookmarkItem(element) {
@@ skipping 608 matching lines @@
       if (isBookmarkList(overElement)) {
         var state = bookmarks.Store.getInstance().data;
         return state.selectedFolder &&
             state.nodes[state.selectedFolder].children.length == 0;
       }
 
       // We can only drop on a folder.
       if (getBookmarkNode(overElement).url)
         return false;
 
-      return !this.dragInfo_.isDraggingChildBookmark(overElement.itemId)
+      return !this.dragInfo_.isDraggingChildBookmark(overElement.itemId);
     },
 
     disableTimeoutsForTesting: function() {
       this.setTimeout_ = function(fn) {
         fn();
       };
       this.dropIndicator_.setTimeout = this.setTimeout_;
     }
   };
 
   return {
     DNDManager: DNDManager,
     DragInfo: DragInfo,
     DropIndicator: DropIndicator,
   };
 });