GitLab

We weren't respecting the full timeout specified by the Reboot() method. And
apparently timing is different enough on the L-release preview that reboots
get stuck forever without the timeout.

BUG=389362

Review URL: https://codereview.chromium.org/375973002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@281927 0039d316-1c4b-4281-b951-d872f2087c98