Provide accessor for object internal properties that doesn't require debugger to be active

include/v8-debug.h

Index: include/v8-debug.h
diff --git a/include/v8-debug.h b/include/v8-debug.h
index e316934e1d728153ea3861643853463b01d12361..fad2b58809070ee94fc12cc98e495799d865eb8a 100644
--- a/include/v8-debug.h
+++ b/include/v8-debug.h
@@ -260,6 +260,14 @@ class V8_EXPORT Debug {
    * unexpectedly used. LiveEdit is enabled by default.
    */
   static void SetLiveEditEnabled(Isolate* isolate, bool enable);
+
+  /**
+   * Returns array of internal properties specific to the value type. Result has
+   * the following format: [<name>, <value>,...,<name>, <value>]. Result array
+   * will be allocated in the current context.
+   */
+  static MaybeLocal<Array> GetInternalProperties(Isolate* isolate,
+                                                 Local<Value> value);
 };