Add a convenience method to get the debugged context

src/api.cc

Index: src/api.cc
diff --git a/src/api.cc b/src/api.cc
index d6336f2846be74c571a5b694d35529236c76af7c..baa83960ec16c10987683751772fb839a2987c96 100644
--- a/src/api.cc
+++ b/src/api.cc
@@ -8124,6 +8124,14 @@ Local<Context> Debug::GetDebugContext() {
   return GetDebugContext(reinterpret_cast<Isolate*>(i::Isolate::Current()));
 }
 
+MaybeLocal<Context> Debug::GetDebuggedContext(Isolate* isolate) {
+  i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
+  ENTER_V8(i_isolate);
+  if (!i_isolate->debug()->in_debug_scope()) return MaybeLocal<Context>();
+  i::Handle<i::Object> calling = i_isolate->GetCallingNativeContext();
+  if (calling.is_null()) return MaybeLocal<Context>();
+  return Utils::ToLocal(i::Handle<i::Context>::cast(calling));
+}
 
 void Debug::SetLiveEditEnabled(Isolate* isolate, bool enable) {
   i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(isolate);