template<typename T>
struct TErrorResult {
enum UnionState {
HasMessage,
HasException,
};
int mResult;
struct Message;
struct DOMExceptionInfo;
union {
Message* mMessage;
DOMExceptionInfo* mDOMExceptionInfo;
};
bool mMightHaveUnreported;
UnionState mUnionState;
};
struct ErrorResult : public TErrorResult<int> {
};