Revert of Revert of Roll ASan/Win to LLVM r229860 (patchset #1 id:1 of https://codere...

Revert of Revert of Roll ASan/Win to LLVM r229860 (patchset #1 id:1 of https://codereview.chromium.org/953063003/)

Reason for revert:
It didn't help, see
https://code.google.com/p/chromium/issues/detail?id=414136#c28

Original issue's description:
> Revert of Roll ASan/Win to LLVM r229860 (patchset #1 id:1 of https://codereview.chromium.org/911323004/)
>
> Reason for revert:
> Probable reason for Sanitizer CHECK failure in CHECK failed: "((curr_thread)) != (0)" (0x0, 0x0)
>
> BUG=414136,459722
>
> Original issue's description:
> > Roll ASan/Win to LLVM r229860
> >
> > This should fix
> > BUG=459722
> >
> > Please note I'm rolling this without waiting for the ASan/Win FYI bot to cycle
> > (takes ~4 hours) to reduce the time it takes the LKGR ASan builder to turn green
> > (assuming r229860 is most likely OK).  If it isn't OK, we'll need to roll once
> > again when we know the next stable LLVM revision.
> >
> > TBR=inferno@chromium.org
> > NOTRY=true
> >
> > Committed: https://crrev.com/fea6440d7458b483d1e230be5e27a5a90e077a80
> > Cr-Commit-Position: refs/heads/master@{#317056}
>
> TBR=timurrrr@chromium.org
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
>
> Committed: https://crrev.com/7e94fd20fcd956162a62d8e7b35b14f76deba495
> Cr-Commit-Position: refs/heads/master@{#317880}

TBR=inferno@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=414136,459722

Review URL: https://codereview.chromium.org/965763002

Cr-Commit-Position: refs/heads/master@{#318445}