Find the correct function for script break points

src/objects.h

Index: src/objects.h
===================================================================
--- src/objects.h	(revision 2860)
+++ src/objects.h	(working copy)
@@ -3105,9 +3105,7 @@
   inline bool is_expression();
   inline void set_is_expression(bool value);
 
-  // Is this function a top-level function. Used for accessing the
-  // caller of functions. Top-level functions (scripts, evals) are
-  // returned as null; see JSFunction::GetCallerAccessor(...).
+  // Is this function a top-level function (scripts, evals).
   inline bool is_toplevel();
   inline void set_is_toplevel(bool value);