GitLab

The implementation of ShouldShowCustomTabBar is moved up
from HostedAppBrowserController to AppBrowserController, with
dependencies on extensions removed.

The CustomTabBarViewBrowserTest tests now pass with BMO.

TBR=bsep@chromium.org

Bug: 966290
Change-Id: I541964d2deb5d30e231bdd79d199c14b26321040
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1871154
Commit-Queue: Eric Willigers <ericwilligers@chromium.org>
Reviewed-by: Alan Cutter <alancutter@chromium.org>
Cr-Commit-Position: refs/heads/master@{#708096}