GitLab

Be sure it is disabled or enabled as expected.

Be sure it is using the same basic function as TimeTicks.

r=rtenneti
Review URL: http://codereview.chromium.org/8437018

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@108228 0039d316-1c4b-4281-b951-d872f2087c98