Reland of win: Update to Windows 10 SDK (patchset #1 id:1 of https://codereview.chromium.org/1391783002/ )
Reland of win: Update to Windows 10 SDK (patchset #1 id:1 of https://codereview.chromium.org/1391783002/ )

Reason for revert:
Chrome's bots have been updated, trying again on Win10 SDK.

Original issue's description:
> Revert of win: Update to Windows 10 SDK (patchset #1 id:1 of https://codereview.chromium.org/1389763002/ )
>
> Reason for revert:
> Chrome still has some Vista builders that can't run the Win 10 SDK tools.
>
> So I'm going to revert this, and then reland it when I try to reland on the
> Chrome side so that NaCl remains rollable in the interim.
>
> Original issue's description:
> > win: Update to Windows 10 SDK
> >
> > Chrome-side update here: https://codereview.chromium.org/1378153003/
> >
> > Make defines consistent in gyp build. GN will be updated when a
> > new //build is rolled for nacl standalone.
> >
> > R=ncbray@chromium.org
> > BUG=491424
> >
> > Committed: https://chromium.googlesource.com/native_client/src/native_client/+/9c69f1fcb35b34f136da7ea7c91ceb743b9d2aaa
>
> TBR=ncbray@chromium.org
> BUG=491424
>
> Committed: https://chromium.googlesource.com/native_client/src/native_client/+/f84c2ab61585743268db990ee54d097426c309f0

TBR=ncbray@chromium.org
BUG=491424

Review URL: https://codereview.chromium.org/1418923007

sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client