Reland "Enable DeferRendererTasksAfterInput"

This is a reland of commit d658fd51b93d9cc75baa3bbc24204f8bc992d32e
but modifies shared helpers to reduce the amount of flaky tests
discovered in CI.

Original change's description:
> Enable DeferRendererTasksAfterInput
>
> With DeferRendererTasksAfterInput shipping in Chrome by default, there
> is no guarantee that that all triggered by the CDP input (for example,
> Input.dispatchMouseEvent) will be processed before the next task (for
> example, Runtime.evaluate) runs. This makes the tests that do not wait
> for the expected page state to become more flaky if the input task was
> delayed.
>
> Tests like these should be treated as other flaky tests and either fixed
> or disabled for investigation.
>
> Bug: 361078921
> Change-Id: I4002b9014e0af1576d5d319c67663b2087a86007
> Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/6226408
> Commit-Queue: Alex Rudenko <alexrudenko@chromium.org>
> Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>

Bug: 361078921
Change-Id: I900a45a2543df44b34be5717830edb6f439a8936
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/6252829
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Alex Rudenko <alexrudenko@chromium.org>
9 files changed
tree: 3c02a0198ba76c4b3af473813a1bcfa880f94424
  1. .vscode/
  2. build_overrides/
  3. config/
  4. docs/
  5. extension-api/
  6. extensions/
  7. front_end/
  8. inspector_overlay/
  9. node_modules/
  10. scripts/
  11. test/
  12. third_party/
  13. v8/
  14. .clang-format
  15. .editorconfig
  16. .git-blame-ignore-revs
  17. .gitallowed
  18. .gitattributes
  19. .gitignore
  20. .gitmodules
  21. .gn
  22. .mailmap
  23. .npmignore
  24. .npmrc
  25. .style.yapf
  26. .stylelintignore
  27. .stylelintrc.json
  28. AUTHORS
  29. BUILD.gn
  30. codereview.settings
  31. CONTRIBUTING.md
  32. DEPS
  33. eslint.config.mjs
  34. favicon.ico
  35. LICENSE
  36. OWNERS
  37. package-lock.json
  38. package.json
  39. PRESUBMIT.py
  40. README.md
  41. tsconfig.json
  42. WATCHLISTS
README.md

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