Fix new tab animation from tab switcher in Duet

This patch changes the container that the new tab animation runs in
when Duet is enabled. The container changes position from running on
top of the toolbars to running beneath them (since the bottom toolbar
is a persistent fixture). This would negatively impact the top toolbar
if there were still icons there (since the top toolbar has an
appearance animation to compensate for the tab appearing on top of
it). However, since there are no icons, it is not an issue.

Bug: 852012
Change-Id: I19422b70844f3fd45e7d9318a3c9c9768b407991
Reviewed-on: https://chromium-review.googlesource.com/1171819
Commit-Queue: Matthew Jones <mdjones@chromium.org>
Reviewed-by: Pedro Amaral <amaralp@chromium.org>
Cr-Commit-Position: refs/heads/master@{#582391}
1 file changed