Bug 1461515 - Split tracking annotations from tracking protection. r=dimi

This makes it possible to use different lists for tracking protection
and for the features that rely on tracking annotations.

Differential Revision: https://phabricator.services.mozilla.com/D2484

toolkit/components/url-classifier/Classifier.cpp

@@ -61,6 +61,11 @@ Classifier::SplitTables(const nsACString& str, nsTArray<nsCString>& tables)
       begin++;
     }
   }
+
+  // Remove duplicates
+  tables.Sort();
+  const auto newEnd = std::unique(tables.begin(), tables.end());
+  tables.TruncateLength(std::distance(tables.begin(), newEnd));
 }
 
 nsresult