Move remote glyph cache DFT handling to painter

Change-Id: I68178e0675a45d77355b76a50eff06238ee1c54c
Reviewed-on: https://skia-review.googlesource.com/158380
Commit-Queue: Herb Derby <herb@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
6 files changed