GitLab

Now that we have //ash/components we're trying to clean up //ui to get
it back to its original state of being low-level UI libraries.

This code was written during the Athena days (when we were trying to
avoid using ash). It is only used inside //ash, so move it there.

Bug: none
Test: ash_unittests, ui_chromeos_unittests
Change-Id: I2484d2d54a8ad99b855719c968708c3008ba52a0
Reviewed-on: https://chromium-review.googlesource.com/917439Reviewed-by: Dominic Mazzoni <dmazzoni@chromium.org>
Commit-Queue: James Cook <jamescook@chromium.org>
Cr-Commit-Position: refs/heads/master@{#536754}