GitLab

This CL is almost the same as http://crrev.com/17573006, which was reverted because of a unit test breakage.

BUG=245578
TEST=Test manually.

Review URL: https://chromiumcodereview.appspot.com/22534003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@217091 0039d316-1c4b-4281-b951-d872f2087c98