[Autofill] Add ftirelo@ as owner of c/b/ui/autofill

Also update the component for bugs.

Bug: None
Change-Id: Ie14c76813048b360dbaab433ce81ac1dcfb3fdbd
Reviewed-on: https://chromium-review.googlesource.com/1131218Reviewed-by: Evan Stade <estade@chromium.org>
Commit-Queue: Mathieu Perreault <mathp@chromium.org>
Cr-Commit-Position: refs/heads/master@{#575494}

chrome/browser/ui/autofill/OWNERS

 estade@chromium.org
+ftirelo@chromium.org
 mathp@chromium.org
 
-# COMPONENT: UI>Browser>Autofill
+# COMPONENT: UI>Browser>Autofill>UI