viz: Re-enable VizDisplayCompositor on Fuchsia

This was disabled because software output was crashing. That works now,
so re-enable it.

Bug: 922242
Test: run_content_shell on fuchsia

Change-Id: I946e7c728002e66603af4d28bdf655f834686875

Reviewed-on: https://chromium-review.googlesource.com/c/1418434
Commit-Queue: Michael Spang <spang@chromium.org>
Reviewed-by: Robert Kroeger <rjkroege@chromium.org>
Cr-Commit-Position: refs/heads/master@{#623811}
1 file changed