GitLab

Adding the first bit of the input page according to design at
http://go/cros-lang-settings-ux slide 23.
Current view: http://screen/K4xO3C4FXaz

Bug: 1113439
Change-Id: Ic2c5e3d1e095e5080bc2409a1c3aafe89a147fc3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2345933
Commit-Queue: My Nguyen <myy@chromium.org>
Reviewed-by: Regan Hsu <hsuregan@chromium.org>
Reviewed-by: Kyle Horimoto <khorimoto@chromium.org>
Cr-Commit-Position: refs/heads/master@{#797463}