Add Win OpenCL Test job.

Bug: skia:8081
Change-Id: Ida8bb5e7bc43656289dda4eea45f3c7ef66f0f0c
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/145379
Commit-Queue: Ben Wagner <benjaminwagner@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
2 files changed