Added project.cfg metadata file for chrome-infra

R=machenbach@chromium.org, sergiyb@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=507723

Review URL: https://codereview.chromium.org/1230823005

Cr-Commit-Position: refs/heads/master@{#29613}