11873   Handle<String> receiver_string;  in IndexOf()  local
11874   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, receiver_string,  in IndexOf()
11884   uint32_t index = receiver_string->ToValidIndex(*position);  in IndexOf()
11886       String::IndexOf(isolate, receiver_string, search_string, index));  in IndexOf()
12144   Handle<String> receiver_string;  in LastIndexOf()  local
12145   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, receiver_string,  in LastIndexOf()
12158     start_index = receiver_string->length();  in LastIndexOf()
12162     start_index = receiver_string->ToValidIndex(*position);  in LastIndexOf()
12166   uint32_t receiver_length = receiver_string->length();  in LastIndexOf()
12176   receiver_string = String::Flatten(isolate, receiver_string);  in LastIndexOf()
12182   String::FlatContent receiver_content = receiver_string->GetFlatContent();  in LastIndexOf()