Issue 656 - Replace some __proto__ with Object.create

lib/filterClasses.js

Index: lib/filterClasses.js
===================================================================
--- a/lib/filterClasses.js
+++ b/lib/filterClasses.js
@@ -63,17 +63,17 @@ Filter.prototype =
     return this.text;
   }
 };
 
 /**
  * Cache for known filters, maps string representation to filter objects.
  * @type Object
  */
-Filter.knownFilters = {__proto__: null};
+Filter.knownFilters = Object.create(null);
 
 /**
  * Regular expression that element hiding filters should match
  * @type RegExp
  */
 Filter.elemhideRegExp = /^([^\/\*\|\@"!]*?)#(\@)?(?:([\w\-]+|\*)((?:\([\w\-]+(?:[$^*]?=[^\(\)"]*)?\))*)|#([^{}]+))$/;
 /**
  * Regular expression that RegExp filters specified as RegExps should match
@@ -361,17 +361,17 @@ ActiveFilter.prototype =
           }
           else
           {
             include = true;
             hasIncludes = true;
           }
 
           if (!domains)
-            domains = {__proto__: null};
+            domains = Object.create(null);
 
           domains[domain] = include;
         }
         domains[""] = !hasIncludes;
       }
 
       this.domainSource = null;
     }