SkUTF16_CountUnichars to error instead of assert.
Update SkUTF16_CountUnichars to return -1 on invalid input instead of
simply asserting in debug. This also removes the unneeded checks for
zero length input. This also updates SkPaintPriv::ValidCountText and its
documentation to reflect the reality that it returns -1 on invalid data.
Bug: skia:8156
Change-Id: Ief227b7dec9d1e823b93e9061558f8412791fc09
Reviewed-on: https://skia-review.googlesource.com/142168
Reviewed-by: Hal Canary <halcanary@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
3 files changed