35   std::string err;  in CompareProps()  local
48       err += "Prop " + latest_prop.api_name() + " has been removed\n";  in CompareProps()
55       err += "Type of prop " + latest_prop.api_name() + " has been changed\n";  in CompareProps()
59       err += "Accessibility of prop " + latest_prop.api_name() +  in CompareProps()
64       err += "Scope of prop " + latest_prop.api_name() +  in CompareProps()
68       err += "Underlying property of prop " + latest_prop.api_name() +  in CompareProps()
72       err += "Enum values of prop " + latest_prop.api_name() +  in CompareProps()
76       err += "Integer-as-bool of prop " + latest_prop.api_name() +  in CompareProps()
83       err += "owner of module " + latest.module() + " has been changed\n";  in CompareProps()
87   if (err.empty())  in CompareProps()
90     return Errorf("{}", err);  in CompareProps()