Trigger removal of invalid browser bound keys.

This change adds an unimplemented service for deleting invalid browser
bound keys when a profile is initialized on Android.

Browser bound keys are behind the flag
chrome://flags/#enable-secure-payment-confirmation-browser-bound-key.

Bug: 377278827, 406299749
Change-Id: I402f7326732676bd2d67399947cd45732242b124
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6509170
Auto-Submit: Slobodan Pejic <slobodan@chromium.org>
Reviewed-by: Stefan Kuhne <skuhne@chromium.org>
Commit-Queue: Stephen McGruer <smcgruer@chromium.org>
Reviewed-by: Stephen McGruer <smcgruer@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1458814}