Add owners to resources/inline_login/OWNERS

Change-Id: If45fe9bcf7029eaeba5443129d3f2b905dce7a9f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2166187Reviewed-by: Achuith Bhandarkar <achuith@chromium.org>
Reviewed-by: Kush Sinha <sinhak@chromium.org>
Commit-Queue: Anastasiia N <anastasiian@chromium.org>
Cr-Commit-Position: refs/heads/master@{#762804}

chrome/browser/resources/inline_login/OWNERS

 achuith@chromium.org
+anastasiian@chromium.org
+sinhak@chromium.org