Add $noinline$ tag to make sure a method has not been inlined.

Change-Id: Ic166cf43be566a0fa44c3c9e1939f647806fc500
diff --git a/test/004-StackWalk/src/Main.java b/test/004-StackWalk/src/Main.java
index 782f51d..9a1d0ab 100644
--- a/test/004-StackWalk/src/Main.java
+++ b/test/004-StackWalk/src/Main.java
@@ -2,7 +2,7 @@
   public Main() {
   }
 
-  int f() throws Exception {
+  int $noinline$f() throws Exception {
     g(1);
     g(2);
 
@@ -93,6 +93,6 @@
 
   public static void main(String[] args) throws Exception {
     Main st = new Main();
-    st.f();
+    st.$noinline$f();
   }
 }