Refactor to use GridLayout::AddView<T>.

Bug: 945335
Change-Id: I44a0f8d7339a045033822a4c09ddef0c9a2fb8c3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1660282
Reviewed-by: Scott Violet <sky@chromium.org>
Reviewed-by: Alexander Alekseev <alemate@chromium.org>
Reviewed-by: Vasilii Sukhanov <vasilii@chromium.org>
Reviewed-by: Allen Bauer <kylixrd@chromium.org>
Reviewed-by: Mihai Sardarescu <msarda@chromium.org>
Reviewed-by: Peter Boström <pbos@chromium.org>
Commit-Queue: Allen Bauer <kylixrd@chromium.org>
Cr-Commit-Position: refs/heads/master@{#670062}
17 files changed