[iOS][MF] Detect if the keyboard view changes on iPads

Bug: 924100
Change-Id: Ia8a47361f95dc590345ac458e1f458570bea6fea
Reviewed-on: https://chromium-review.googlesource.com/c/1446654
Reviewed-by: Olivier Robin <olivierrobin@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#627913}(cherry picked from commit 49699e6500b4adc31b688059111fee2dd572ad8f)
Reviewed-on: https://chromium-review.googlesource.com/c/1452768
Reviewed-by: Javier Ernesto Flores Robles <javierrobles@chromium.org>
Cr-Commit-Position: refs/branch-heads/3683@{#184}
Cr-Branched-From: e51029943e0a38dd794b73caaf6373d5496ae783-refs/heads/master@{#625896}
2 files changed