Handle invalid mode in SkGpuDevice::drawPoints.

Bug: skia:7427
Change-Id: I5f63d1c77577942f648fdc1439a9b4338299b033
Reviewed-on: https://skia-review.googlesource.com/87340
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
1 file changed