another stray <include> -> ""

Change-Id: Ibc51adc679d19ab78298b317836983f2b8e217bb
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/209882
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
1 file changed