chromeos: Enable app list mash_browser_tests

They pass now, probably thanks to the app list code moving into //ash.

Bug: none
Test: browser_tests --enable-features=Mash
Change-Id: I10bbdce9f5eb8bc4235f086488733a78bbbb3942
Reviewed-on: https://chromium-review.googlesource.com/1072827
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Commit-Queue: James Cook <jamescook@chromium.org>
Cr-Commit-Position: refs/heads/master@{#561857}
1 file changed