[debugger] Further stepping support in test wrapper

test/mjsunit/debug-print.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: --allow-natives-syntax
-
-// Make sure printing different element kinds doesn't crash.
-
-var array;
-var obj = {};
-
-array = [];
-%DebugPrint(array);
-
-// FAST_SMI_ELEMENTS
-array = [1, 2, 3];
-%DebugPrint(array);
-
-// FAST_HOLEY_SMI_ELEMENTS
-array[10] = 100;
-array[11] = 100;
-%DebugPrint(array);
-
-// FAST_ELEMENTS
-array = [1, obj, obj];
-%DebugPrint(array);
-
-// FAST_HOLEY_ELEMENTS
-array[100] = obj;
-array[101] = obj;
-%DebugPrint(array);
-
-// FAST_DOUBLE_ELEMENTS
-array = [1.1, 2.2, 3.3, 3.3, 3.3, NaN];
-%DebugPrint(array);
-array.push(NaN);
-array.push(NaN);
-%DebugPrint(array);
-
-// FAST_HOLEY_DOUBLE_ELEMENTS
-array[100] = 1.2;
-array[101] = 1.2;
-%DebugPrint(array);
-
-// DICTIONARY_ELEMENTS
-%NormalizeElements(array);
-%DebugPrint(array);