[iOS] Moving up the sign in buttons inside the safe area

Adding a fix that should have been committed with crrev.com/1286659

When the OK button layout is updated, the container layout should be
updated too.

Bug: 897105
Change-Id: I80a22e755d3255b4ce2c5f637280a3ac7576f1a5
Reviewed-on: https://chromium-review.googlesource.com/c/1290978
Reviewed-by: Gauthier Ambard <gambard@chromium.org>
Commit-Queue: Jérôme Lebel <jlebel@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#601137}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 6ccb6aee8e61a18e7e74f2baa15d961f6ba05576
1 file changed