Outset dst texture bounds by a pixel to fix corruption in dstreadshuffle.

BUG=skia:6380

Change-Id: I90ed1a6e942bcc44f246795aeb8f87922e0ddddf
Reviewed-on: https://skia-review.googlesource.com/9785
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
1 file changed