Switch Win Exceptions Build to Clang.

No-Try: true
Change-Id: I119c7853299b6eef65f991b41cbb2afb0a35f431
Reviewed-on: https://skia-review.googlesource.com/113673
Commit-Queue: Ben Wagner <benjaminwagner@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
7 files changed