[inspector] async stacks for Promise.then calls...

src/debug/interface-types.h

 // 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.
 
 #ifndef V8_DEBUG_INTERFACE_TYPES_H_
 #define V8_DEBUG_INTERFACE_TYPES_H_
 
 #include <cstdint>
 #include <string>
 #include <vector>
 
 namespace v8 {
 namespace debug {
 
+enum AsyncTaskEventType {
+  EnqueueRecurring = 0,
+  WillHandle = 1,
+  DidHandle = 2,
+  Cancel = 3
+};
+
 /**
  * Defines location inside script.
  * Lines and columns are 0-based.
  */
 class Location {
  public:
   Location(int line_number, int column_number);
   /**
    * Create empty location.
    */
@@ skipping 31 matching lines @@
         offset_table(std::move(offset_table)) {}
 
   std::string disassembly;
   OffsetTable offset_table;
 };
 
 }  // namespace debug
 }  // namespace v8
 
 #endif  // V8_DEBUG_INTERFACE_TYPES_H_