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- Screen reader will read the app name when the chip is focused.
- Navigate chips using tab.
- Toggle app to install / not install with space or enter key.
- Screen reader will read the title of recommend-apps and app-dowloading
screens.

Bug: 885219
Change-Id: I5ad9f79b33ae8a55fe4f5240692261e346461a22
Reviewed-on: https://chromium-review.googlesource.com/1234237Reviewed-by: Alexander Alekseev <alemate@chromium.org>
Commit-Queue: Yue Cen <rsgingerrs@chromium.org>
Cr-Commit-Position: refs/heads/master@{#593670}