GitLab

This can be used to simulate the offline state.

BUG=162350
TEST=none; no changes in production code.

Review URL: https://codereview.chromium.org/11827045

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@176040 0039d316-1c4b-4281-b951-d872f2087c98