Can Arduino Uno's serial handle to foward push through 1-wire protocol?
Ok, so there's two issues at stake here.


Can the Arduino generate a 1-wire protocol with enough accuracy?
Can you transfer the data fast enough through the UART to tell it to do that generation?


You can't just stream a 1-wire protocol through serial and expect it to work.  The low-level serial protocol would very much get in the way.  So you have to send instructions to the Arduino to say "Raise the IO pin" and "Lower the IO pin" and "Tell me when the IO pin changes level", and "Set the IO pin to input" etc.

Each of those actions would be a discrete item that you would have to send.  Given that you could have a single byte per action (send "I" for set to input, send "O" for set to output, send "L" for set to low, etc - Arduino sends "H" if the pin goes high, or "L" if it goes low, etc), what kind of response could you expect?

Well, at 8 bits + start + stop per byte (so 10 bits) at a good fast rate (say 1MBaud), you would expect one byte to take (1/(1000000/10) = 0.00001s (10µs) to transfer.  That's raw transfer speed.  On top of that you then have to add the processing of that incoming data - the Arduino adds it to a circular buffer to allow your sketch to read it, and that takes time, and your program then interpreting it, you could expect a latency of say 15µs.  At maximum stream rate (no breaks between characters being sent at all) you would have a basic granularity of 10µs (processing the last incoming character while the next one is being received).

That's not counting any other factors such as the UART buffers on your computer, latency before the character even gets to the USB port's endpoint, etc.

So all in all there might be a slim chance that you could do it, but it would be very slim and not easy to achieve a stable result.

Far better would be to implement the 1-Wire protocol on the Arduino and just send/receive the control information to tell it to go ahead and do the work and return the results.  After all, that's what the Arduino is designed for - low level interfacing like that.