Get VS2013 compilation working again for Crashpad

Follow up #1 to https://chromium-review.googlesource.com/c/400015/,
still pending further discussion on details of registration.

R=mark@chromium.org
BUG=chromium:567850,chromium:656800

Change-Id: Idfee3a3241d7cfe418fbf9e40f17f35e5dbefac9
Reviewed-on: https://chromium-review.googlesource.com/401182
Reviewed-by: Mark Mentovai <mark@chromium.org>
1 file changed