Add SkLRUCache.h to core.gni.

It wasn't listed in gn so didn't show up in editors as a known file in
projects.

Change-Id: Ie01773489dd72f055f04785ca7f21b6bdef6a3f7
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/290541
Commit-Queue: Ben Wagner <bungeman@google.com>
Auto-Submit: Ben Wagner <bungeman@google.com>
Reviewed-by: Herb Derby <herb@google.com>
1 file changed