[debugger] Further stepping support in test wrapper

test/debugger/debug/debug-stepout-recursive-function.js

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-// Flags: --expose-debug-as debug
-// Get the Debug object exposed from the debug context global object.
 Debug = debug.Debug
 
 var exception = null;
 
 // Simple debug event handler which counts the number of breaks hit and steps.
 var break_point_hit_count = 0;
 function listener(event, exec_state, event_data, data) {
   try {
     if (event == Debug.DebugEvent.Break) {
       break_point_hit_count++;
@@ skipping 52 matching lines @@
 fact(3);
 EndTest(4);
 
 BeginTest('Test 4');
 shouldBreak = function(x) { return x == 1 || x == 3; };
 fact(3);
 EndTest(5);
 
 // Get rid of the debug event listener.
 Debug.setListener(null);