This is done. It adds ~100 lines of extra spew to master-paladin, which I think is worth it.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/chromite/+/37f1c488541e10ea9ca7a5211c2ec2959d6881f1

commit 37f1c488541e10ea9ca7a5211c2ec2959d6881f1
Author: Lann Martin <lannm@chromium.org>
Date: Fri Jun 15 22:26:25 2018

Annotate ScheduleSlavesStage with scheduled build links

BUG= chromium:852600 
TEST=scheduler_stages_unittest (see links in output)

Change-Id: Ie5b828d3b5db9f614d70ae0071b0cd18396d4a49
Reviewed-on: https://chromium-review.googlesource.com/1101912
Commit-Ready: Lann Martin <lannm@chromium.org>
Tested-by: Lann Martin <lannm@chromium.org>
Reviewed-by: Jason Clinton <jclinton@chromium.org>
Reviewed-by: Don Garrett <dgarrett@chromium.org>

[modify] https://crrev.com/37f1c488541e10ea9ca7a5211c2ec2959d6881f1/cbuildbot/stages/scheduler_stages.py
[modify] https://crrev.com/37f1c488541e10ea9ca7a5211c2ec2959d6881f1/cbuildbot/stages/scheduler_stages_unittest.py

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/0496b4e506eb35f69d49007198fa1e666d5646df

commit 0496b4e506eb35f69d49007198fa1e666d5646df
Author: Chromite Chromium Autoroll <chromite-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Date: Sat Jun 16 15:52:18 2018

Roll src/third_party/chromite 3a51f2a80a38..ae92f3c98fbe (10 commits)

https://chromium.googlesource.com/chromiumos/chromite.git/+log/3a51f2a80a38..ae92f3c98fbe


git log 3a51f2a80a38..ae92f3c98fbe --date=short --no-merges --format='%ad %ae %s'
2018-06-16 chrome-bot@chromium.org Update config settings by config-updater.
2018-06-16 dgarrett@google.com chromeos_config: Require all non-slaves to be important.
2018-06-15 lannm@chromium.org Annotate ScheduleSlavesStage with scheduled build links
2018-06-15 dgarrett@google.com generic_stages: Stop tagging skipped stages.
2018-06-15 dgarrett@google.com chromeos_config: Switch full builders to manifest_version.
2018-06-15 manojgupta@chromium.org Revert "chrome-sdk: Remove absolute path from simple chrome build using goma"
2018-06-15 xixuan@chromium.org SkylabHWTest: Swtich to use nyan_blaze release image to test.
2018-06-15 vapier@chromium.org cros lint: ignore initial UTF-8 BOM in JSON files
2018-06-15 ayatane@chromium.org chromeos-infra-go: Disable tests
2018-06-15 chrome-bot@chromium.org Update config settings by config-updater.


Created with:
  gclient setdep -r src/third_party/chromite@ae92f3c98fbe

The AutoRoll server is located here: https://chromite-chromium-roll.skia.org

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.



BUG=chromium:None,chromium:852600,chromium:852916,chromium:851183,chromium:824548,chromium:846610,chromium:845314,chromium:None,chromium:852633
TBR=chrome-os-gardeners@chromium.org

Change-Id: Id646fa70fc50cd3fd10506b67812fb6782bfdf36
Reviewed-on: https://chromium-review.googlesource.com/1103501
Reviewed-by: Chromite Chromium Autoroll <chromite-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Commit-Queue: Chromite Chromium Autoroll <chromite-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#567895}
[modify] https://crrev.com/0496b4e506eb35f69d49007198fa1e666d5646df/DEPS