class Browser::Chrome

def full_version
  # Each regex on its own line to enforce precedence.
  ua[%r{Chrome/([\d.]+)}, 1] ||
    ua[%r{CriOS/([\d.]+)}, 1] ||
    ua[%r{Safari/([\d.]+)}, 1] ||
    ua[%r{AppleWebKit/([\d.]+)}, 1] ||
    "0.0"
end