XP bots failed it->network_prefix > 0 check.
There is not way to run try jobs there.
This patch is temprorary. I'll revert it after few runs on bots.

NOTRY=true

Review URL: https://codereview.chromium.org/24637003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@225667 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 225667