Upgrade Windows 10 to v1703.

No-Try: true
Change-Id: Ifb8528d889233fa14320b9f665ddcaf2f5fae6fb
Reviewed-on: https://skia-review.googlesource.com/15141
Reviewed-by: Ben Wagner <benjaminwagner@google.com>
Commit-Queue: Ben Wagner <benjaminwagner@google.com>
2 files changed