sources:
  "icons.tar.bz2": a835954af164bf38f8ea4ea80608839bed7800a3
  gn-binaries.tar.xz: 312d6a6addabeed98f3357d34dbc87ccfd43026b
  chromium-33.0.1750.117.tar.xz: 9881d7cfc1ebbc9f21dc4b686eeb6630b6849701