[inspector] store creation stack in current V8StackTraceImpl

src/inspector/v8-debugger-agent-impl.cc

Index: src/inspector/v8-debugger-agent-impl.cc
diff --git a/src/inspector/v8-debugger-agent-impl.cc b/src/inspector/v8-debugger-agent-impl.cc
index 5279b051396af1434028e8ad2493443d768d006b..81e48085570b648f330e986ab8f895707d677e7a 100644
--- a/src/inspector/v8-debugger-agent-impl.cc
+++ b/src/inspector/v8-debugger-agent-impl.cc
@@ -1030,9 +1030,7 @@ Response V8DebuggerAgentImpl::currentCallFrames(
 
 std::unique_ptr<StackTrace> V8DebuggerAgentImpl::currentAsyncStackTrace() {
   if (!isPaused()) return nullptr;
-  V8StackTraceImpl* stackTrace = m_debugger->currentAsyncCallChain();
-  return stackTrace ? stackTrace->buildInspectorObjectForTail(m_debugger)
-                    : nullptr;
+  return V8StackTraceImpl::buildInspectorObjectForTail(m_debugger);
 }
 
 bool V8DebuggerAgentImpl::isPaused() const { return m_debugger->isPaused(); }