
Add code to parse cert.xml and cert.sig.xml files as produced by the recovery key store. This will be used to determine the list of active recovery key store cohorts. Parsing these on the browser process is allowed as the files are served by a Google property whose certificate is pinned (gstatic.com). See go/gpm-pin-sync Bug: 399818721 Change-Id: Iddcac90b8e8ecedcab48e121c2649e0dd609d30e Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6458500 Reviewed-by: Joey Arhar <jarhar@chromium.org> Commit-Queue: Joey Arhar <jarhar@chromium.org> Reviewed-by: Thomas Anderson <thomasanderson@chromium.org> Auto-Submit: Nina Satragno <nsatragno@chromium.org> Reviewed-by: Maksim Moskvitin <mmoskvitin@google.com> Cr-Commit-Position: refs/heads/main@{#1448646}