also want to pick up https://codereview.chromium.org/2784423003

building binaries from r299791: https://codereview.chromium.org/2805973002

r299879 fixed the asan error

r299930 introduced the unused template warning
r299956 reverted that


I'll try building binaries for r299879: https://codereview.chromium.org/2809953003

and r299956: https://codereview.chromium.org/2808363004

Nope, those had test failures. Trying r299960 https://codereview.chromium.org/2816593003

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/a6f580ee29385647f86e82efb9ab1192c6b0f849

commit a6f580ee29385647f86e82efb9ab1192c6b0f849
Author: hans <hans@chromium.org>
Date: Wed Apr 12 15:16:27 2017

Roll clang 298539:299960.

This includes r299782 which allows for using
_interlockedbittestandset without including
intrin.h, and a configuration change which means
Clang no longer implicitly passes -Wl,--build-id
to the linker by default.

BUG= 709521 , 622775 , 708769 

Review-Url: https://codereview.chromium.org/2816593003
Cr-Commit-Position: refs/heads/master@{#464027}

[modify] https://crrev.com/a6f580ee29385647f86e82efb9ab1192c6b0f849/tools/clang/scripts/update.py

Great success!