Update ReflectorImplTest to exit early for Viz

So Reflector doesn't work with VizDisplayCompositor yet at all. See
https://crbug.com/601869 for tracking getting this working again.

This updates the ReflectorImplTest to exit early when VizDisplayCompositor is
enabled. This is so that we can remove the filter files used for
content_unittests with Viz.

This change then also removes the filter file, and updates the bots.

TEST=ReflectorImplTest

Bug: 762512
Change-Id: I5fa02925cbe3d961fbfa46f646b68b25da5671ed
Reviewed-on: https://chromium-review.googlesource.com/1153300
Reviewed-by: ccameron <ccameron@chromium.org>
Reviewed-by: Dirk Pranke <dpranke@chromium.org>
Commit-Queue: Jonathan Ross <jonross@chromium.org>
Cr-Commit-Position: refs/heads/master@{#579383}
12 files changed