[inspector] introduce limit for amount of stored async stacks

src/inspector/test-interface.cc

+// 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.
+
+#include "src/inspector/test-interface.h"
+
+#include "src/inspector/v8-debugger.h"
+#include "src/inspector/v8-inspector-impl.h"
+
+namespace v8_inspector {
+
+void SetMaxAsyncTaskStacksForTest(V8Inspector* inspector, int limit) {
+  static_cast<V8InspectorImpl*>(inspector)
+      ->debugger()
+      ->setMaxAsyncTaskStacksForTest(limit);
+}
+
+}  //  v8_inspector