Cache ICU break iterators in SkUnicode_icu

Change-Id: I2d6abd1a12d629b590a6616d0d1c71d71d5f4812
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/344476
Commit-Queue: Jason Simmons <jsimmons@google.com>
Reviewed-by: Julia Lavrova <jlavrova@google.com>
1 file changed