Specify image dimension for Win2016.

Will remove after transition to new image.

Change-Id: I4254643aa1279b6e2046d2cdef9ff1d481f85531
Reviewed-on: https://skia-review.googlesource.com/73260
Reviewed-by: Eric Boren <borenet@google.com>
Commit-Queue: Ben Wagner <benjaminwagner@google.com>
2 files changed