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Removed orientation [uikit_]ui_util fncts that relied on
[[UIApplication] sharedApp].keyWindow.

Change-Id: I2936c5c1afd2c682fa967db896ba3b5161144be1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2424085
Commit-Queue: David Jean <djean@chromium.org>
Reviewed-by: Mark Cogan <marq@chromium.org>
Reviewed-by: Gauthier Ambard <gambard@chromium.org>
Cr-Commit-Position: refs/heads/master@{#809763}