DevTools: Fix pretty print inconsistent spacing

third_party/WebKit/Source/devtools/front_end/externs.js

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 625 matching lines @@
     /**
      * @param {string} text
      * @param {Object.<string, boolean>} options
      * @return {!Acorn.Tokenizer}
      */
     tokenizer: function(text, options) {},
 
     tokTypes: {
         _true: new Acorn.TokenType(),
         _false: new Acorn.TokenType(),
+        _null: new Acorn.TokenType(),
         num: new Acorn.TokenType(),
         regexp: new Acorn.TokenType(),
         string: new Acorn.TokenType(),
         name: new Acorn.TokenType(),
         eof: new Acorn.TokenType()
     }
 };
 
 var Acorn = {};
 /**
@@ skipping 113 matching lines @@
     /** @type {(string|!Array<!Gonzales.Node>)} */
     this.content;
 }
 
 /**
  * @type {string}
  * @see http://heycam.github.io/webidl/#es-DOMException-prototype-object
  * TODO(jsbell): DOMException should be a subclass of Error.
  */
 DOMException.prototype.message;