It's increasingly difficult to remember the order of macOS releases by name, so these IsOSSierra()-style functions should be changed to add a version number or remove the release name completely (although it's probably worth keeping the name). Maybe replace OS with macOS.
First step is creating a small doc where we can discuss and converge on a naming scheme.
E.g. isMacOS12Sierra, ismacOS12.
Comment 1 by shrike@chromium.org
, Aug 29 2016