Include files declared in compiler.gni in shader program cache key We should invalidate the program cache when the files declared in compiler.gni changes. Add those files for shader cache key calculations. Bug: angleproject:4981 Bug: b/285871779 Change-Id: I9a8a65c1b02c4efcc6126d8b77017ddd8328e7a2 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4662395 Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Commit-Queue: Yuxin Hu <yuxinhu@google.com> Reviewed-by: Cody Northrop <cnorthrop@google.com>