GitLab

While we are still compiling the report from the field trial, disable prerender
to be on the safer side in M61.

Bug: 678332, 735153, 520275
Change-Id: I30a2169533d30cbb85f53291223897caceddeb89
Reviewed-on: https://chromium-review.googlesource.com/584871
Commit-Queue: Egor Pasko <pasko@chromium.org>
Reviewed-by: David Roger <droger@chromium.org>
Reviewed-by: Reilly Grant <reillyg@chromium.org>
Reviewed-by: Marc Treib <treib@chromium.org>
Cr-Commit-Position: refs/heads/master@{#491691}