Extract parse_space_separated_languages

A bit too much logic in an attribute switch case which can be given a
better name. This function remains specialized until such time as it may
need to be generalized.

Change-Id: Idc5f7653cb8706d2c54c23a858b320266d4f989e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/439737
Reviewed-by: John Stiles <johnstiles@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
1 file changed