Reland "Set VizDisplayCompositor feature enabled on desktop platforms."

This is a reland of f1ef4405b08f701d2bdae9494e0cdf92506de98eS. Not
enabled on mac as it causes timeouts in webkit_layout_tests.

Original change's description:
> Set VizDisplayCompositor feature enabled on desktop platforms.
>
> In preparation for launching OOP-D on stable switch the
> VizDisplayCompositor feature from disabled to enabled by default. This
> is following with the finch best practices.
>
> This is a reland of https://crrev.com/c/1361930 which was reverted for
> flaky tests. Fixes have been landed for the flaky tests.
>
> Bug: 730193
> Change-Id: I7dd8869dc942f579a336bca1a2b383a9b2d42a93
> Reviewed-on: https://chromium-review.googlesource.com/c/1374207
> Reviewed-by: Jonathan Ross <jonross@chromium.org>
> Commit-Queue: Jonathan Ross <jonross@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#616285}

Bug: 730193
Change-Id: I1eefea03b980e0b3d124e90a0deaa1a583008216
Reviewed-on: https://chromium-review.googlesource.com/c/1375639
Reviewed-by: Jonathan Ross <jonross@chromium.org>
Commit-Queue: kylechar <kylechar@chromium.org>
Cr-Commit-Position: refs/heads/master@{#616337}
1 file changed