8161604: TestNewSizeFlags fails with RuntimeException: max new size != MaxNewSize value

Reviewed-by: sangheki, tschatzl
diff --git a/test/lib/sun/hotspot/WhiteBox.java b/test/lib/sun/hotspot/WhiteBox.java
index e34b27a..1db761d 100644
--- a/test/lib/sun/hotspot/WhiteBox.java
+++ b/test/lib/sun/hotspot/WhiteBox.java
@@ -84,6 +84,7 @@
   public native long getVMAllocationGranularity();
   public native long getVMLargePageSize();
   public native long getHeapSpaceAlignment();
+  public native long getHeapAlignment();
 
   private native boolean isObjectInOldGen0(Object o);
   public         boolean isObjectInOldGen(Object o) {