[debugger] Migrate more debugger tests to inspector

test/mjsunit/regress/regress-crbug-568477-4.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;", "var b = 2;", "Debug.setListener(null);"];
-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);
-  } catch (e) {
-    %AbortJS(e + "\n" + e.stack);
-  }
-}
-
-Debug.setListener(listener);
-
-function f() {
-  var a = 1;
-  debugger;
-  var x = y;
-  print(x);
-}
-
-try {
-  %Call(f, {});
-} catch (e) {
-  var b = 2;
-}
-
-Debug.setListener(null);
-
-assertEquals(expected, log);