Revert "[vm] Remove --causal-async-stacks flag"

This reverts commit b1f1aee94d8730d7d3b6def8a1fffec2181fcfb1.

Reason for revert: Some left-over uses in g3 need to removed first
(some were removed in b/380758599 but apparently there's some 
usages left).

Original change's description:
> [vm] Remove --causal-async-stacks flag
> The flag isn't used anywhere in our tests or in embedder code. Turning
> it on will result in a VM startup error.
> We should therefore remove all uses of the flag and the flag itself.
> TEST=Existing test suite.
> Change-Id: I19dfba052df7948dfdb379c0610dab67ebbcd12d
> Reviewed-on:
> Reviewed-by: Clement Skau <>
> Commit-Queue: Martin Kustermann <>,

Change-Id: I03aad46f46153d5ea4ac2fcdd5685d0ef2a0d9af
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-by: Martin Kustermann <>
Commit-Queue: Martin Kustermann <>
21 files changed
tree: a0f2fac48bd31f0e71d8978993c83437b756b2c9
  1. .dart_tool/
  2. .github/
  3. benchmarks/
  4. build/
  5. client/
  6. docs/
  7. pkg/
  8. runtime/
  9. samples/
  10. samples-dev/
  11. samples_2/
  12. sdk/
  13. tests/
  14. third_party/
  15. tools/
  16. utils/
  17. .clang-format
  18. .gitattributes
  19. .gitconfig
  20. .gitignore
  21. .gn
  22. .mailmap
  23. .packages
  24. .style.yapf
  25. .vpython
  29. codereview.settings
  31. DEPS
  35. README.dart-sdk
  37. sdk_args.gni


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