Fix Rehydrator bug with built-in variable references.
We need to use `possiblyBuiltinSymbolRef` when rehydrating variable
references to account for dehydrated code which accesses variables like
sk_FragCoord.
Change-Id: I2ae596eb0c78b289b69fa1dd10bf01b83981a0f6
Bug: skia:13164
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/532237
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
3 files changed