[debug-wrapper] Adapt tests, breakpoint.actual_location

test/mjsunit/regress/regress-crbug-621361.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;
-var steps = 0;
-var exception = null;
-
-function listener(event, execState, eventData, data) {
-  if (event != Debug.DebugEvent.Break) return;
-  try {
-    assertEquals([ debug.ScopeType.Local,
-                   debug.ScopeType.Script,
-                   debug.ScopeType.Global],
-                 execState.frame().allScopes().map(s => s.scopeType()));
-    var x_value = execState.frame().evaluate("x").value();
-    if (steps < 2) {
-      assertEquals(undefined, x_value);
-      execState.prepareStep(Debug.StepAction.StepIn);
-    } else {
-      assertEquals("l => l", x_value.toString());
-    }
-    steps++;
-  } catch (e) {
-    exception = e;
-  }
-}
-
-Debug.setListener(listener);
-
-(function() {
-  debugger;
-  var x = l => l;
-})();
-
-Debug.setListener(null);
-assertNull(exception);
-assertEquals(3, steps);