SkFontMgr_Android refactoring Change-Id: If3d9a9933675b7e2528859ba7300e60d5f029f8d Reviewed-on: https://skia-review.googlesource.com/c/skia/+/919077 Commit-Queue: Julia Lavrova <jlavrova@google.com> Reviewed-by: Ben Wagner <bungeman@google.com>