There seems to be a copy-paste issue with the documentation for the
return value of SkFont::countText. SkFont::countText returns the number
of glyphs, measureText returns the sum of the default advances.
Change-Id: Id3c9008c20e7b4b8ad4f1d834df19183a9b2bf1e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/530046
Reviewed-by: Derek Sollenberger <djsollen@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
42d514781d