[debugger] Migrate more debugger tests to inspector

test/debugger/debug/regress/regress-crbug-582048.js

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --expose-debug-as debug
 
 var Debug = debug.Debug;
 
 function listener(event, exec_state, event_data, data) {
   if (event != Debug.DebugEvent.Break) return;
   try {
     var frame_count = exec_state.frameCount();
     for (var i = 0; i < frame_count; i++) {
       var frame = exec_state.frame(i);
       var scope_count = frame.scopeCount();
       for (var j = 0; j < scope_count; j++) {
         var scope = frame.scope(j);
         assertTrue(scope.scopeObject().property('').isUndefined());
       }
     }
   } catch (e) {
     print(e, e.stack);
     exception = e;
   }
 }
 
 Debug.setListener(listener);
 
 (function(a = 1) { debugger; })();
 
 Debug.setListener(null);