GitLab

* Refactors more common logic for the three expectation file types
  into diff_utils.py
* Changes sort order for proguard expectations so that they diff better
* Output "actual_data" rather than .stamp files for expectation targets
* Stop writing out .proguard_configs for all proguard runs
  * I don't think these files have been referenced for a long time, and
    the expectations file largely serves their purpose in a more
    discoverable way.
* Don't define validate_expectations GN group unless it will
  have deps (to prevent thinking your GN args are correct when
  they are not).

Bug: 1064151
Change-Id: I5394471e7defd2c2f7e2f2173097a11d830cde65
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2314265Reviewed-by: Mohamed Heikal <mheikal@chromium.org>
Commit-Queue: Andrew Grieve <agrieve@chromium.org>
Cr-Commit-Position: refs/heads/master@{#791342}