[debugger] Migrate more debugger tests to inspector

test/debugger/debug/regress/regress-crbug-568477-3.js

 // Copyright 2015 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 --allow-natives-syntax
 
 var Debug = debug.Debug;
 var expected = ["debugger;", "var x = y;", "debugger;", "var x = y;"];
 var log = [];
 
 function listener(event, exec_state, event_data, data) {
   if (event != Debug.DebugEvent.Break) return;
   try {
     log.push(exec_state.frame(0).sourceLineText().trimLeft());
     exec_state.prepareStep(Debug.StepAction.StepNext);
@@ skipping 31 matching lines @@
       }
     } catch (e) {
       %AbortJS(e + "\n" + e.stack);
     }
   }
 
   %EnqueueMicrotask(checkResult);
 }
 
 testDone(0);