Export the assignable instance counting.
diff --git a/dalvik/src/main/java/dalvik/system/VMDebug.java b/dalvik/src/main/java/dalvik/system/VMDebug.java
index 0298680..1eb589e 100644
--- a/dalvik/src/main/java/dalvik/system/VMDebug.java
+++ b/dalvik/src/main/java/dalvik/system/VMDebug.java
@@ -397,9 +397,15 @@
     private static void startClassPrep() {}
 
     /**
-      * Returns a count of the extant instances of a class.
+     * Counts the instances of a class.
      *
+     * @param klass the class to be counted.
+     * @param assignable if false, direct instances of klass are
+     *                   counted.  If true, instances that are
+     *                   assignable to klass, as defined by
+     *                   {@link Class#isAssignableFrom} are counted.
+     * @returns the number of matching instances.
      * @hide
      */
-    public static native long countInstancesOfClass(Class cls);
+    public static native long countInstancesOfClass(Class klass, boolean assignable);
 }