Make fully lazy proxies possess an origin

Change-Id: Icd3d68bce78568562aa12167a58b6d6e5064b124
Reviewed-on: https://skia-review.googlesource.com/106901
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
8 files changed