GitLab

Add LoginScreenStorageListKeys() and LoginScreenStorageDelete() methods
to the SessionManagerClient.

Bug: 980171
Change-Id: Ib4492bc9dc9019798895b84f08d3c35c7d516994
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1753924Reviewed-by: Alexander Hendrich <hendrich@chromium.org>
Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
Commit-Queue: Zakhar Voit <voit@google.com>
Cr-Commit-Position: refs/heads/master@{#694323}