[api] Expose ES6 7.3.14 SetIntegrityLevel on v8::Object

src/api.cc

Index: src/api.cc
diff --git a/src/api.cc b/src/api.cc
index 5aea79984777b30081c3c3bc9a705a42a896ae95..e195e6abc0246c30859f225eeb4588038bd21712 100644
--- a/src/api.cc
+++ b/src/api.cc
@@ -3912,6 +3912,19 @@ Local<String> v8::Object::GetConstructorName() {
   return Utils::ToLocal(name);
 }
 
+Maybe<bool> v8::Object::SetIntegrityLevel(Local<Context> context,
+                                          IntegrityLevel level) {
+  PREPARE_FOR_EXECUTION_PRIMITIVE(context, "v8::Object::SetIntegrityLevel()",
+                                  bool);
+  auto self = Utils::OpenHandle(this);
+  i::JSReceiver::IntegrityLevel i_level =
+      level == IntegrityLevel::kFrozen ? i::FROZEN : i::SEALED;
+  Maybe<bool> result =
+      i::JSReceiver::SetIntegrityLevel(self, i_level, i::Object::DONT_THROW);
+  has_pending_exception = result.IsNothing();
+  RETURN_ON_FAILED_EXECUTION_PRIMITIVE(bool);
+  return result;
+}
 
 Maybe<bool> v8::Object::Delete(Local<Context> context, Local<Value> key) {
   PREPARE_FOR_EXECUTION_PRIMITIVE(context, "v8::Object::Delete()", bool);