Clang: the tip-of-tree version is now 9

TBR=thakis

Bug: 922386
Change-Id: I14856f18ea5025fd9f1fd813e3fe87bdb787a656
Reviewed-on: https://chromium-review.googlesource.com/c/1412828
Reviewed-by: Hans Wennborg <hans@chromium.org>
Commit-Queue: Hans Wennborg <hans@chromium.org>
Cr-Commit-Position: refs/heads/master@{#623192}
2 files changed