[graphite] Remove ref counting from Recorder.

Bug: skia:12794
Change-Id: Iefdc2d84991a542533d13c227051c372459564db
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/494241
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>
7 files changed