{ +block{blocked} } 
/ # Block all URLs

{ -block }
.github.com
.docker.io
.docker.com
.githubusercontent.com
.ubuntu.com

# for buildeps
chromium.googlesource.com

# for chr-source
chrome-infra-packages.appspot.com
.googleapis.com
.googlesource.com

# for goma client
chrome-infra-packages.appspot.com