[Clean up] Update the list of OWNERS for the Autofill component.

BUG=none
TEST=none
R=blundell@chromium.org

Review URL: https://codereview.chromium.org/581473003

Cr-Commit-Position: refs/heads/master@{#295518}

components/OWNERS

@@ -3,9 +3,8 @@ caitkp@chromium.org
 erikwright@chromium.org
 jochen@chromium.org
 
-per-file autofill*=dhollowa@chromium.org
+per-file autofill*=estade@chromium.org
 per-file autofill*=isherman@chromium.org
-per-file autofill*=kaiwang@chromium.org
 
 per-file bookmarks.gypi=sky@chromium.org