Observe SkFont::textToGlyphs() maxGlyphCount

Change-Id: Ic0f8738a2edf0592aa45333e5fab1f2b09c21fc1
Reviewed-on: https://skia-review.googlesource.com/c/167542
Commit-Queue: Florin Malita <fmalita@chromium.org>
Reviewed-by: Ben Wagner <bungeman@google.com>
3 files changed