ccpr: Actually register path cache entries as listeners on paths

Bug: skia:8452
Change-Id: If2e19ea43e82893e57d788a75844100f8b6a11d1
Reviewed-on: https://skia-review.googlesource.com/c/160835
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
1 file changed