Revert of roll clang 254049:254793 (patchset #3 id:40001 of https://codereview.chromium.org/1507873002/ )
Reason for revert:
Speculative revert to see if this fixes link error on 'Google Chrome Linux x64'. Please see first comment on the revert CL for more info.
Original issue's description:
> roll clang 254049:254793
>
> This switches msan to the new ABI.
>
> It's also the first roll that used update.py instead of
> update.sh to build the packages.
>
> It also changes package.py to bundle up libstdc++ on linux
> unconditionally, and removes the --gcc-toolchain flag from
> it (the auto-downloaded gcc should be good enough;
> one fewer thing I can get wrong).
>
> BUG=565541
>
> Committed: https://crrev.com/3c862a1dff6cbe5f693ba788cdc71770d408e7b7
> Cr-Commit-Position: refs/heads/master@{#363986}
TBR=hans@chromium.org,thakis@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=565541
Review URL: https://codereview.chromium.org/1508403002
Cr-Commit-Position: refs/heads/master@{#364051}
8 files changed
