[inspector] introduced stepIntoAsync for chained callbacks

src/inspector/v8-debugger.h

Index: src/inspector/v8-debugger.h
diff --git a/src/inspector/v8-debugger.h b/src/inspector/v8-debugger.h
index 5859c1d5abbe4fceee179977d8becdd95b80219e..dcf00950249f3b404ded6b26aabb0c84c2e82db3 100644
--- a/src/inspector/v8-debugger.h
+++ b/src/inspector/v8-debugger.h
@@ -46,6 +46,7 @@ class V8Debugger : public v8::debug::DebugDelegate {
   void breakProgram();
   void continueProgram();
   void stepIntoStatement();
+  Response stepIntoAsync();
   void stepOverStatement();
   void stepOutOfFunction();
 
@@ -136,6 +137,8 @@ class V8Debugger : public v8::debug::DebugDelegate {
   void asyncTaskCreated(void* task, void* parentTask);
   void registerAsyncTaskIfNeeded(void* task);
 
+  int currentContextGroupId();
+
   // v8::debug::DebugEventListener implementation.
   void PromiseEventOccurred(v8::debug::PromiseDebugActionType type, int id,
                             int parentId) override;
@@ -179,6 +182,9 @@ class V8Debugger : public v8::debug::DebugDelegate {
   protocol::HashMap<V8DebuggerAgentImpl*, int> m_maxAsyncCallStackDepthMap;
   protocol::HashMap<void*, void*> m_parentTask;
 
+  void* m_currentCreatedAsyncTask = nullptr;
+  protocol::HashSet<void*> m_asyncTasksWithScheduledBreak;
+
   v8::debug::ExceptionBreakState m_pauseOnExceptionsState;
 
   WasmTranslation m_wasmTranslation;