Fix class Plugin cannot be applied to given types

Change-Id: I0ea391b159f621e700b2635561254905c5866c09

src/main/java/com/googlesource/gerrit/plugins/labelui/client/LabelUIPlugin.java

diff --git a/src/main/java/com/googlesource/gerrit/plugins/labelui/client/LabelUIPlugin.java b/src/main/java/com/googlesource/gerrit/plugins/labelui/client/LabelUIPlugin.java
index 5937bd1..a7dba89 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/labelui/client/LabelUIPlugin.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/labelui/client/LabelUIPlugin.java
@@ -38,10 +38,10 @@
 
     Plugin.get().panel(
         GerritUiExtensionPoint.CHANGE_SCREEN_BELOW_CHANGE_INFO_BLOCK,
-        new LabelPanel.Factory());
+        new LabelPanel.Factory(), null);
     Plugin.get().panel(
         GerritUiExtensionPoint.PREFERENCES_SCREEN_BOTTOM,
-        new LabelUiPreferencesPanel.Factory());
+        new LabelUiPreferencesPanel.Factory(), null);
   }
 
   public static void refreshDefaultLabelUi(LabelUi ui) {