Issue 2824 - Only consider ads subscriptions in chooseFilterSubscription

lib/utils.js

Index: lib/utils.js
diff --git a/lib/utils.js b/lib/utils.js
index e218dab6258ccbecc283e62c3d27c155cf973774..48e1f1fe3813435aef537cea77e95083e94c6018 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -79,46 +79,6 @@ let Utils = exports.Utils = {
     return null;
   },
 
-  chooseFilterSubscription(subscriptions)
-  {
-    let selectedItem = null;
-    let selectedPrefix = null;
-    let matchCount = 0;
-    for (let subscription of subscriptions)
-    {
-      if (!selectedItem)
-        selectedItem = subscription;
-
-      let prefix = Utils.checkLocalePrefixMatch(
-        subscription.getAttribute("prefixes")
-      );
-      if (prefix)
-      {
-        if (!selectedPrefix || selectedPrefix.length < prefix.length)
-        {
-          selectedItem = subscription;
-          selectedPrefix = prefix;
-          matchCount = 1;
-        }
-        else if (selectedPrefix && selectedPrefix.length == prefix.length)
-        {
-          matchCount++;
-
-          // If multiple items have a matching prefix of the same length:
-          // Select one of the items randomly, probability should be the same
-          // for all items. So we replace the previous match here with
-          // probability 1/N (N being the number of matches).
-          if (Math.random() * matchCount < 1)
-          {
-            selectedItem = subscription;
-            selectedPrefix = prefix;
-          }
-        }
-      }
-    }
-    return selectedItem;
-  },
-
   getDocLink(linkID)
   {
     let docLink = require("prefs").Prefs.documentation_link;