[debug-wrapper] Further extend the debug wrapper

test/debugger/debug/regress/regress-119609.js

 // Copyright 2012 the V8 project authors. All rights reserved.
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 // modification, are permitted provided that the following conditions are
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 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-// Flags: --expose-debug-as debug
 
 Debug = debug.Debug;
 
 var exception = false;
 
 function listener(event, exec_state, event_data, data) {
   try {
     if (event == Debug.DebugEvent.Break) {
       function lookup(name) {
         return exec_state.frame(0).evaluate(name).value();
       }
 
       assertEquals(3, lookup("e"));
       assertEquals(4, lookup("f"));
       assertEquals(1, lookup("a"));
 
-      try {
-        assertEquals(2, lookup("b"));
-      } catch (e) {
-        assertEquals("ReferenceError: b is not defined", e.toString());
-      }
+      assertThrows(() => lookup("b"), ReferenceError);
     }
   } catch (e) {
     exception = e.toString() + e.stack;
   }
 }
 
 Debug.setListener(listener);
 
 function f(a, b) {
   var c = 3;
   function d(e, f) {
     var g = a;
     var h = c;
     debugger;
   }
 
   return d;
 }
 
 f(1, 2)(3, 4);
 
 assertFalse(exception);