Does a creature deal combat damage to a planeswalker if its controller redirects damage from a player to that planeswalker?

Prior to the Magic 2010 rules update, a player could choose to redirect combat damage that would be dealt to them toward a planeswalker they controlled. That rule no longer exists. Under the current Comprehensive Rules, planeswalkers are simply legal targets for combat damage assignment directly — no redirection step is involved.

When a creature attacks, the active player declares an attack target: either a player, a planeswalker, or (with some newer rules) a battle. If the attacker is declared as attacking a planeswalker, damage is assigned to that planeswalker during the combat damage step (CR 510.1, 510.2). The creature's controller never 'redirects' anything; the attack target itself determines where damage goes.

Damage dealt to a planeswalker removes that many loyalty counters from it (CR 306.7). If a planeswalker reaches zero loyalty counters, it is put into its owner's graveyard as a state-based action (CR 704.5i).

Concrete example: Your 3/3 Grizzly Bears attacks your opponent's Liliana of the Veil. You declared the planeswalker as the attack target. When combat damage is dealt, Liliana loses 3 loyalty counters — no redirection by your opponent is needed or possible.

Because the redirection rule was removed entirely, this question's premise is outdated. There is no current game action called 'redirecting damage to a planeswalker' in normal gameplay; attacking the planeswalker directly is the only way to deal combat damage to it.