Add support to change the status header for gatekeeper-ng.

BUG=340462

Review URL: https://codereview.chromium.org/143263025

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/chromium-build@249525 0039d316-1c4b-4281-b951-d872f2087c98
4 files changed