Enable PWAs and RemoteMacViews by default

Some tests only work when app shims are disabled. Plumb this signal
through to ensure that we don't create an AppShimHost for these.

Bug: 851848
Change-Id: I9e921afd1a26d4102c06972faa34db93e479abc2
Reviewed-on: https://chromium-review.googlesource.com/c/1377720
Reviewed-by: Avi Drissman <avi@chromium.org>
Reviewed-by: Elly Fong-Jones <ellyjones@chromium.org>
Commit-Queue: Avi Drissman <avi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#616794}
5 files changed