[VK] Use semantically-correct bounds when querying keyboard bounds.

There are several places where we query the keyboard bounds by
grabbing the keyboard container window and calling |bounds|. However,
it's unclear whether they mean the bounds relative to parent or bounds
relative to the screen, since both are currently the same for the
keyboard container.

This patch changes several callers to use |GetBoundsInScreen| since
they actually want the screen bounds. Note we don't change any behaviour
since currently keyboard container |bounds| == |GetBoundsInScreen|, but
this will change in future when we get rid of keyboard container.

Bug: 849980
Change-Id: I7211073a7697f168824c127319dfc40e6888195a
Reviewed-on: https://chromium-review.googlesource.com/1098417
Commit-Queue: James Cook <jamescook@chromium.org>
Reviewed-by: James Cook <jamescook@chromium.org>
Reviewed-by: Yuichiro Hanada <yhanada@chromium.org>
Cr-Commit-Position: refs/heads/master@{#567253}
5 files changed