[inspector] introduced Debugger.scheduleStepIntoAsync

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 c43a9701f00774639670c7bf71d72c6b647d2a5c..6fecd44a594bd672eeeda2ea2087682d0d820048 100644
--- a/src/debug/debug-interface.h
+++ b/src/debug/debug-interface.h
@@ -102,6 +102,7 @@ enum StepAction {
 };
 
 void PrepareStep(Isolate* isolate, StepAction action);
+void ClearStepping(Isolate* isolate);
 
 bool HasNonBlackboxedFrameOnStack(Isolate* isolate);
 
@@ -164,8 +165,9 @@ MaybeLocal<UnboundScript> CompileInspectorScript(Isolate* isolate,
 class DebugDelegate {
  public:
   virtual ~DebugDelegate() {}
-  virtual void PromiseEventOccurred(debug::PromiseDebugActionType type, int id,
-                                    int parent_id) {}
+  virtual void PromiseEventOccurred(v8::Local<v8::Context> context,
+                                    debug::PromiseDebugActionType type, int id,
+                                    int parent_id, bool breakable) {}
   virtual void ScriptCompiled(v8::Local<Script> script,
                               bool has_compile_error) {}
   virtual void BreakProgramRequested(v8::Local<v8::Context> paused_context,