[inspector] use creation stack trace as parent for async call chains

src/inspector/v8-stack-trace-impl.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/v8-stack-trace-impl.h"
 
 #include <algorithm>
 
 #include "src/inspector/v8-debugger.h"
 #include "src/inspector/wasm-translation.h"
@@ skipping 280 matching lines @@
       m_description(description),
       m_frames(std::move(frames)),
       m_asyncParent(asyncParent),
       m_asyncCreation(asyncCreation) {
   DCHECK(m_contextGroupId);
 }
 
 std::unique_ptr<protocol::Runtime::StackTrace>
 AsyncStackTrace::buildInspectorObject(AsyncStackTrace* asyncCreation,
                                       int maxAsyncDepth) const {
-  std::unique_ptr<protocol::Runtime::StackTrace> stackTrace =
-      buildInspectorObjectCommon(m_frames, m_description, m_asyncParent.lock(),
-                                 m_asyncCreation.lock(), maxAsyncDepth);
-  if (asyncCreation && !asyncCreation->isEmpty()) {
-    stackTrace->setPromiseCreationFrame(
-        asyncCreation->m_frames[0]->buildInspectorObject());
-  }
-  return stackTrace;
+  return buildInspectorObjectCommon(m_frames, m_description,
+                                    m_asyncParent.lock(),
+                                    m_asyncCreation.lock(), maxAsyncDepth);
 }
 
 int AsyncStackTrace::contextGroupId() const { return m_contextGroupId; }
 
 const String16& AsyncStackTrace::description() const { return m_description; }
 
 std::weak_ptr<AsyncStackTrace> AsyncStackTrace::parent() const {
   return m_asyncParent;
 }
 
 std::weak_ptr<AsyncStackTrace> AsyncStackTrace::creation() const {
   return m_asyncCreation;
 }
 
 bool AsyncStackTrace::isEmpty() const { return m_frames.empty(); }
 
 }  // namespace v8_inspector