Revert of win/clang: Roll clang 239674:242130 (patchset #3 id:40001 of https://codereview.chromium.org/1234713002/)

Reason for revert:
Looks like this caused http://crbug.com/510555

Original issue's description:
> win/clang: Roll clang 239674:242130
>
> 32-bit SEH, member pointers with virtual bases, inttypes.h warning fix...
>
> BUG=509256,82385
> R=hans@chromium.org
>
> Committed: https://chromium.googlesource.com/chromium/src/+/2776ee378ee7d309d5d837e1e4405460403556ff

TBR=hans@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=509256,82385

Review URL: https://codereview.chromium.org/1240813002

Cr-Commit-Position: refs/heads/master@{#338891}
3 files changed