Revert "Prepare to restart the Finch study for ad-hoc signing of PWAs on Mac"

This reverts commit f5542be58c8ea0758b6618ad3563f38af3b322c1.

Reason for revert: Potentially causing failures on Mac bot
https://ci.chromium.org/ui/p/chromium/builders/ci/Mac%20ASan%2064%20Tests%20(1)/96223/overview

Original change's description:
> Prepare to restart the Finch study for ad-hoc signing of PWAs on Mac
>
> This updates the expiration of WebAppShimSignatureValidationResult to a
> future date and adds a field trial testing config.
>
> Bug: 40276068
> Change-Id: Ie4905d02e444e2ab0710658e374be8293a306473
> Fixed: 372006025
> Include-Ci-Only-Tests: true
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6178620
> Reviewed-by: Marijn Kruisselbrink <mek@chromium.org>
> Commit-Queue: Mark Rowe <markrowe@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#1407528}

Bug: 40276068
Change-Id: If43f4e44daa99255f14a731a3bf8f3af76be3af5
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6179042
Auto-Submit: Rakina Zata Amni <rakina@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Rakina Zata Amni <rakina@chromium.org>
Owners-Override: Rakina Zata Amni <rakina@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1407689}
2 files changed
tree: adb4cf390246e5f522174e6dfa78ed5cf47f5f5b
  1. android_webview/
  2. apps/
  3. ash/
  4. base/
  5. build/
  6. build_overrides/
  7. buildtools/
  8. cc/
  9. chrome/
  10. chromecast/
  11. chromeos/
  12. codelabs/
  13. components/
  14. content/
  15. crypto/
  16. dbus/
  17. device/
  18. docs/
  19. extensions/
  20. fuchsia_web/
  21. gin/
  22. google_apis/
  23. gpu/
  24. headless/
  25. infra/
  26. ios/
  27. ipc/
  28. media/
  29. mojo/
  30. native_client_sdk/
  31. net/
  32. pdf/
  33. ppapi/
  34. printing/
  35. remoting/
  36. rlz/
  37. sandbox/
  38. services/
  39. skia/
  40. sql/
  41. storage/
  42. styleguide/
  43. testing/
  44. third_party/
  45. tools/
  46. ui/
  47. url/
  48. webkit/
  49. .clang-format
  50. .clang-tidy
  51. .clangd
  52. .git-blame-ignore-revs
  53. .gitallowed
  54. .gitattributes
  55. .gitignore
  56. .gitmodules
  57. .gn
  58. .mailmap
  59. .rustfmt.toml
  60. .vpython3
  61. .yapfignore
  62. ATL_OWNERS
  63. AUTHORS
  64. BUILD.gn
  65. CODE_OF_CONDUCT.md
  66. codereview.settings
  67. CPPLINT.cfg
  68. CRYPTO_OWNERS
  69. DEPS
  70. DIR_METADATA
  71. LICENSE
  72. LICENSE.chromium_os
  73. OWNERS
  74. PRESUBMIT.py
  75. PRESUBMIT_test.py
  76. PRESUBMIT_test_mocks.py
  77. README.md
  78. WATCHLISTS
README.md

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