[inspector] removed kDebugPromiseCollected event

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
+void DumpAsyncTaskStacksStateForTest(V8Inspector* inspector) {
+  static_cast<V8InspectorImpl*>(inspector)
+      ->debugger()
+      ->dumpAsyncTaskStacksStateForTest();
+}
+
+}  // namespace v8_inspector