Use SkFont in GPU drawing step 1

Use SkFont in most places, but save setupCache for
its own CL.

Change-Id: I2c603c03e23e132edd3e164d256a1fb753523d36
Reviewed-on: https://skia-review.googlesource.com/c/175841
Commit-Queue: Herb Derby <herb@google.com>
Reviewed-by: Mike Reed <reed@google.com>
2 files changed