IsMoveOnlyType     95 base/callback_internal.h template <typename T, bool is_move_only = IsMoveOnlyType<T>::value>
IsMoveOnlyType    166 base/callback_internal.h typename enable_if<!IsMoveOnlyType<T>::value, T>::type& CallbackForward(T& t) {
IsMoveOnlyType    171 base/callback_internal.h typename enable_if<IsMoveOnlyType<T>::value, T>::type CallbackForward(T& t) {