While implementing Pipeline Cache is optional, we still need a placeholder object in order to return have a valid handle for this object. b/118386749 Change-Id: I18abb4196fbc99d3f639c1ba14ceb570ac11b365 Reviewed-on: https://swiftshader-review.googlesource.com/c/22729Reviewed-by: Nicolas Capens <nicolascapens@google.com> Tested-by: Alexis Hétu <sugoi@google.com>
