Adapt to Account.Id refactoring

Change-Id: Ia15392516add4c173b9822812d181dc09cb15616
diff --git a/src/test/java/com/googlesource/gerrit/plugins/findowners/OwnersValidatorIT.java b/src/test/java/com/googlesource/gerrit/plugins/findowners/OwnersValidatorIT.java
index b074992..fbce8d3 100644
--- a/src/test/java/com/googlesource/gerrit/plugins/findowners/OwnersValidatorIT.java
+++ b/src/test/java/com/googlesource/gerrit/plugins/findowners/OwnersValidatorIT.java
@@ -113,7 +113,7 @@
       ImmutableSetMultimap.Builder<String, Account.Id> builder = ImmutableSetMultimap.builder();
       int id = 1000000;
       for (String s : registered) {
-        builder.put(s, new Account.Id(++id));
+        builder.put(s, Account.id(++id));
       }
       return builder.build();
     }