[recipe] Add tag "trigger_by" to chromium_swarming

This is useful to monitor the traffic switching from the legacy Python script to the new Go CLI. We can use this to monitor either a single builder, or all the builders.

Bug: 894045
Change-Id: I956e2b352992a3ea1471ed24986e682be3a684db
Recipe-Nontrivial-Roll: build_limited_scripts_slave
Recipe-Nontrivial-Roll: chrome_release
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/build/+/2413936
Commit-Queue: Ye Kuang <yekuang@google.com>
Reviewed-by: Junji Watanabe <jwata@google.com>
Reviewed-by: Takuto Ikuta <tikuta@chromium.org>
252 files changed
tree: 41252bf6b720ab689f44768729aa1a21dc11f2e7
  1. infra/
  2. recipes/
  3. scripts/
  4. site_config/
  5. third_party/
  6. .gitattributes
  7. .gitignore
  8. .style.yapf
  9. .vpython
  10. .yapfignore
  11. codereview.settings
  12. CROS_OWNERS
  13. DEPS
  14. environment.cfg.py
  15. LICENSE
  16. OWNERS
  17. PRESUBMIT.py
  18. README.md
  19. WATCHLISTS
README.md

Recipes

If you're here to make a change to ‘recipes’ (the code located in scripts/slave/recipes*), please take a look at the README for more information pertaining to recipes.

Style

The preferred style is PEP8 with two-space indent; that is, the Chromium Python style. Functions use lowercase_with_underscores, with the exception of the special functions RunSteps and RunTests in recipes. Use yapf (git cl format --no-clang-format) to autoformat new code.