Add A11y SUW hub page after verifying build fix.

Original CL: 
https://googleplex-android-review.git.corp.google.com/#/c/828444/.

Diff (fixes build and adds a period):
https://googleplex-android-review.git.corp.google.com/#/c/841247/

This reverts commit 44be967e.

Change-Id: I971806022dcd791de2d7819fa19df7801f51b673