Make SkGlyphRun use SkFont instead of SkPaint

Change-Id: I5f34857a21deac418eaaeb19c776b2148b7f0737
Reviewed-on: https://skia-review.googlesource.com/c/175460
Reviewed-by: Hal Canary <halcanary@google.com>
Reviewed-by: Mike Reed <reed@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Herb Derby <herb@google.com>
16 files changed