Add a step to all chromium builds that reads & displays gn_logs.txt

This file gets generated at GN-gen time and includes debug info for
various parts of the build. It currently contains log statements printed
by the non-trivial logic that determines how many concurrent links to
use based on system specs.

Win LED:
https://ci.chromium.org/swarming/task/4df2a7ec69b0f110?server=chromium-swarm.appspot.com
Android LED:
https://ci.chromium.org/swarming/task/4df2a81500d2f110?server=chromium-swarm.appspot.com
Linux LED:
https://ci.chromium.org/swarming/task/4df2a87b0109a110?server=chromium-swarm.appspot.com
Mac LED:
https://ci.chromium.org/swarming/task/4df2a8c854b46a10?server=chromium-swarm.appspot.com

Recipe-Nontrivial-Roll: build_limited_scripts_slave
Recipe-Nontrivial-Roll: chrome_release
Bug: 1113246
Change-Id: I60417b7c29ca537bc93f9ee36d52569199287bf6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/build/+/2347065
Reviewed-by: Garrett Beaty <gbeaty@chromium.org>
Reviewed-by: Dirk Pranke <dpranke@google.com>
Commit-Queue: Ben Pastene <bpastene@chromium.org>
95 files changed
tree: aec8ac32972a81b708a90dba9f11794768305bf1
  1. infra/
  2. scripts/
  3. site_config/
  4. third_party/
  5. .gitattributes
  6. .gitignore
  7. .style.yapf
  8. .vpython
  9. .yapfignore
  10. codereview.settings
  11. CROS_OWNERS
  12. DEPS
  13. environment.cfg.py
  14. LICENSE
  15. OWNERS
  16. PRESUBMIT.py
  17. README.md
  18. 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) to autoformat new code.