Issue 790047  has been merged into this issue.

The automated path should work similar to the upload_clang bots:..

0. (optional) Have a script to kick off builds on some bots (https://cs.chromium.org/chromium/src/tools/clang/scripts/upload_revision.py?type=cs&q=win_upload_clang&sq=package:chromium&l=78)
1. Have bots that can build clang-format (clang update bot setup is https://cs.chromium.org/chromium/build/scripts/slave/recipes/chromium_upload_clang.py?q=chromium_upload_clang&sq=package:chromium&dr mostly, see revision history to see other files that need touching for bot setup)

There's no step 2.


Optionally, we could use something like https://cs.chromium.org/chromium/build/scripts/slave/recipes/chromium_upload_clang.py?q=chromium_upload_clang&sq=package:chromium&dr to build clang-format for mac/win/linux on a mac box, then we'd only need one instead of 3 bots. (But couldn't run tests as easily, and since we need a mac, not a linux box, it's not all that useful anyhow.)

 Issue 877502  has been merged into this issue.

This is blocking using Chromium's infra for Dawn since we are checking the formatting with a PRESUBMIT and use clang-format 6 or 7 options.

Feel free to steal! I won't get to this soon.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/buildtools/+/24ebce4578745db15274e180da1938ebc1358243

commit 24ebce4578745db15274e180da1938ebc1358243
Author: Sam Maier <smaier@chromium.org>
Date: Fri Nov 16 15:36:49 2018

Update clang-format binaries and scripts for all platforms.

I followed these instructions:
https://chromium.googlesource.com/chromium/src/+/master/docs/updating_clang_format_binaries.md

The binaries were built at clang revision 346566 on November 15, 2018.

Rolling because 344070 introduces Java import reordering in
clang-format, and 346566 fixes a critical bug with Objective C.

OLD: https://chromium-review.googlesource.com/c/chromium/src/+/1296816
NEW: https://chromium-review.googlesource.com/c/chromium/src/+/1331609

ls -l output
-rwxr-xr-x 1 smaier primarygroup 1967524 Nov 15 16:47 buildtools/mac/clang-format
-rwxr-xr-x 1 smaier primarygroup 1862936 Nov 15 14:06 buildtools/linux64/clang-format
-rw-r--r-- 1 smaier primarygroup 2637824 Nov 15 14:04 buildtools/win/clang-format.exe


Bug:  768586 , 768983 
Change-Id: I2761fc91201d2ffa0d999e637f8f8ba53bcccb5e

[modify] https://crrev.com/24ebce4578745db15274e180da1938ebc1358243/linux64/clang-format.sha1
[modify] https://crrev.com/24ebce4578745db15274e180da1938ebc1358243/deps_revisions.gni
[modify] https://crrev.com/24ebce4578745db15274e180da1938ebc1358243/win/clang-format.exe.sha1
[modify] https://crrev.com/24ebce4578745db15274e180da1938ebc1358243/clang_format/README.chromium
[modify] https://crrev.com/24ebce4578745db15274e180da1938ebc1358243/DEPS
[modify] https://crrev.com/24ebce4578745db15274e180da1938ebc1358243/mac/clang-format.sha1

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/bf89178f52ee6fe536140f83338af3494e8355cc

commit bf89178f52ee6fe536140f83338af3494e8355cc
Author: Nico Weber <thakis@chromium.org>
Date: Wed Nov 21 02:07:20 2018

Roll src/buildtools/ 13a00f110..da9b2941c (3 commits)

https://chromium.googlesource.com/chromium/buildtools.git/+log/13a00f110ef9..da9b2941cbf6

$ git log 13a00f110..da9b2941c --date=short --no-merges --format='%ad %ae %s'
2018-11-20 thakis Revert "Roll libcxx{abi}
2018-11-16 smaier Update clang-format binaries and scripts for all platforms.
2018-10-29 thomasanderson Roll libcxx{abi}

Created with:
  roll-dep src/buildtools

Bug:  768586 , 768983 
Change-Id: Ib72e2e4f38b9ed662652a440925ff9260f97abcc
Reviewed-on: https://chromium-review.googlesource.com/c/1344293
Reviewed-by: Sam Maier <smaier@chromium.org>
Commit-Queue: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#609898}
[modify] https://crrev.com/bf89178f52ee6fe536140f83338af3494e8355cc/DEPS

Let's keep this open for a bit to see if issues crop up. I'll send a short announcement to chromium-dev.

No reports about brokenness yet. Knock on wood :-)