[devtools] Throw adding 2 internal authenticators
Have devtools throw an error when a client attempts to add an internal
authenticator when there's one already present in the environment. This
is not supported and causes all sorts of issues.
This requires fixing a WPT that did not clean the virtual
authenticator. The WPT passing and not crashing Chrome previously was
luck.
Fixed: 40234612
Change-Id: I25d6e6c3387d0180234c21af157bc0b6ef15f566
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6047769
Reviewed-by: Alex Rudenko alexrudenko@chromium.org
Auto-Submit: Nina Satragno nsatragno@chromium.org
Commit-Queue: Alex Rudenko alexrudenko@chromium.org
Cr-Commit-Position: refs/heads/main@{#1388668}