Fix link errors in shared-library builds when using SkRuntimeEffect inner classes

See: https://groups.google.com/g/skia-discuss/c/uv29z4AyI0M/m/16yMsBdhAgAJ
Change-Id: Ie1e5075081c915c76bd6abdf8a20025d5c8ffc87
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/763216
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
1 file changed