Add Skia expectation for lines.pdf

Bug: pdfium:1957
Change-Id: Ia94ae99e2fff456851c67043fdf86dbfaa186555
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium_tests/+/103410
Reviewed-by: K. Moon <kmoon@chromium.org>
1 file changed