Revert "testing: migrate some tests to python3"

This reverts commit 99f2ce39334374f2e7b001d81737feb411b0138d.

Reason for revert: Speculative revert
NativeMessaging tests started failing on mac and there is no obvious culprit in the blamelist.
https://ci.chromium.org/ui/p/chromium/builders/ci/mac11-arm64-rel-tests/3724

Original change's description:
> testing: migrate some tests to python3
>
> To suppress UnicodeDecodeError, add an wrapper class for stdin in
> asan_symbolize.py.
>
> Fixed: 1288169
> Change-Id: I5d5b8726b148b3bf95887803911bd47c696a3da2
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3423288
> Reviewed-by: Joe Downing <joedow@chromium.org>
> Reviewed-by: Nico Weber <thakis@chromium.org>
> Commit-Queue: Takuto Ikuta <tikuta@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#966056}

Change-Id: Ie47853985626bfa7dc75cc4b9b9f44552593d417
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3431019
Auto-Submit: Christos Froussios <cfroussios@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Reviewed-by: Christos Froussios <cfroussios@chromium.org>
Owners-Override: Christos Froussios <cfroussios@chromium.org>
Reviewed-by: Christoph Schwering <schwering@google.com>
Commit-Queue: Christoph Schwering <schwering@google.com>
Cr-Commit-Position: refs/heads/main@{#966146}
NOKEYCHECK=True
GitOrigin-RevId: 9b8a696a5670d3dd603a981784f20bfb6580ceb2
1 file changed
tree: 20f30798678daad696f386b90e71a2fa880668d9
  1. asan/
  2. OWNERS
  3. README