GitLab

base::Singleton is deprecated in favor of base::NoDestructor. The
conversion is straight-forward for this leaky singleton and this
allow removing unnecessary scaffolding code.

Bug: none
Change-Id: I1db6f1fdd00b3532efbaea8367c8563cc5e28740
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2409495Reviewed-by: Adam Langley <agl@chromium.org>
Commit-Queue: Sylvain Defresne <sdefresne@chromium.org>
Cr-Commit-Position: refs/heads/master@{#806940}