ccpr: Recycle the stashed atlas's texture explicitly

This solution is more future-proof.

Bug: skia:
Change-Id: Ifa437a511336282d73befddea2656f3fcdb3f2ef
Reviewed-on: https://skia-review.googlesource.com/136964
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
3 files changed