GitLab

Skia is starting to use more advanced runtime-detected
CPU features, and this is problematic when running layout tests
(results are now machine-dependent).

Add a flag to disable Skia's runtime optimizations, and always
apply it when running layout tests.

BUG=skia:6657

Change-Id: I98e371ea60a5b0a290ba869c9134afe328ccae90
Reviewed-on: https://chromium-review.googlesource.com/512942Reviewed-by: Mike Klein <mtklein@chromium.org>
Reviewed-by: Antoine Labour <piman@chromium.org>
Commit-Queue: Florin Malita <fmalita@chromium.org>
Cr-Commit-Position: refs/heads/master@{#473996}