[inspector] introduced stepIntoAsync for chained callbacks

src/debug/debug-interface.h

Index: src/debug/debug-interface.h
diff --git a/src/debug/debug-interface.h b/src/debug/debug-interface.h
index fcf119e3ad3fbb8e5363a738f0a74cdde4ffa226..1fc77b32d8e43e37d54044e8ed56827ad12db8a3 100644
--- a/src/debug/debug-interface.h
+++ b/src/debug/debug-interface.h
@@ -91,6 +91,7 @@ enum StepAction {
 };
 
 void PrepareStep(Isolate* isolate, StepAction action);
+void ClearStepping(Isolate* isolate);
 
 bool HasNonBlackboxedFrameOnStack(Isolate* isolate);
 
@@ -152,8 +153,9 @@ MaybeLocal<UnboundScript> CompileInspectorScript(Isolate* isolate,
 class DebugDelegate {
  public:
   virtual ~DebugDelegate() {}
-  virtual void PromiseEventOccurred(debug::PromiseDebugActionType type, int id,
-                                    int parent_id) {}
+  virtual void PromiseEventOccurred(debug::PromiseDebugActionType type,
+                                    int id) {}
+  virtual void PromiseCreatedEvent(int id, int parent_id, bool is_breakable) {}
   virtual void ScriptCompiled(v8::Local<Script> script,
                               bool has_compile_error) {}
   virtual void BreakProgramRequested(v8::Local<v8::Context> paused_context,