Issue 6994 - Use shortcut matching for location only filters

lib/filterClasses.js

Index: lib/filterClasses.js
===================================================================
--- a/lib/filterClasses.js
+++ b/lib/filterClasses.js
@@ -767,16 +767,24 @@
       this.sitekeySource = null;
     }
 
     Object.defineProperty(
       this, "sitekeys", {value: sitekeys, enumerable: true}
     );
     return this.sitekeys;
   },
+  /**
+   * Tests whether the filter only has location.
+   */
+  get isLocationOnly()
+  {
+    return this.contentType == RegExpFilter.prototype.contentType &&
+           this.thirdParty == null && !this.domains && !this.sitekeys;
+  },
 
   /**
    * Tests whether the URL matches this filter
    * @param {string} location URL to be tested
    * @param {number} typeMask bitmask of content / request types to match
    * @param {string} [docDomain] domain name of the document that loads the URL
    * @param {boolean} [thirdParty] should be true if the URL is a third-party
    *                               request
@@ -784,16 +792,20 @@
    * @return {boolean} true in case of a match
    */
   matches(location, typeMask, docDomain, thirdParty, sitekey)
   {
     return (this.contentType & typeMask) != 0 &&
            (this.thirdParty == null || this.thirdParty == thirdParty) &&
            this.isActiveOnDomain(docDomain, sitekey) &&
            this.regexp.test(location);
+  },
+  matchesLocation(location)
+  {
+    return this.regexp.test(location);
   }
 });
 
 /**
  * Yields the filter itself (required to optimize {@link Matcher}).
  * @yields {RegExpFilter}
  */
 RegExpFilter.prototype[Symbol.iterator] = function*()