[Extensions] Remove kAllowLegacyMV2Extensions base::Feature

The kAllowLegacyMV2Extensions base::Feature allowed developers to
test unpacked MV2 extensions while they were still supported on legacy
Chrome builds. No supported version of Chrome supports MV2, so this can
be removed.

This CL has no production behavior change, since it removes a
default-disabled feature.

Bug: 431097630
Change-Id: Ie6032b2dc4db373310def3e0e3d2424d6bbdb2a9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7903742
Reviewed-by: Tim <tjudkins@chromium.org>
Commit-Queue: Devlin Cronin <rdevlin.cronin@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1643611}
5 files changed
tree: c8a7e25c470a3971077893ea7cf047d83152447f
  1. .agents/
  2. .claude/
  3. .gemini/
  4. .github/
  5. agents/
  6. android_webview/
  7. apps/
  8. ash/
  9. base/
  10. build/
  11. build_overrides/
  12. buildtools/
  13. cc/
  14. chrome/
  15. chromecast/
  16. chromeos/
  17. codelabs/
  18. components/
  19. content/
  20. crypto/
  21. dbus/
  22. device/
  23. docs/
  24. extensions/
  25. fuchsia_web/
  26. gin/
  27. google_apis/
  28. gpu/
  29. headless/
  30. infra/
  31. ios/
  32. ipc/
  33. media/
  34. mojo/
  35. net/
  36. pdf/
  37. printing/
  38. remoting/
  39. rlz/
  40. sandbox/
  41. services/
  42. skia/
  43. sql/
  44. storage/
  45. styleguide/
  46. testing/
  47. third_party/
  48. tools/
  49. ui/
  50. url/
  51. webkit/
  52. .clang-format
  53. .clang-tidy
  54. .clangd
  55. .cursorignore
  56. .geminiignore
  57. .git-blame-ignore-revs
  58. .gitallowed
  59. .gitattributes
  60. .gitignore
  61. .gitmodules
  62. .gn
  63. .mailmap
  64. .rustfmt.toml
  65. .vpython3
  66. .yapfignore
  67. ATL_OWNERS
  68. AUTHORS
  69. BRANCH_FEATURE_OWNERS
  70. BRANCH_OWNERS
  71. BUILD.gn
  72. CODE_OF_CONDUCT.md
  73. codereview.settings
  74. CPPLINT.cfg
  75. CRYPTO_OWNERS
  76. DEPS
  77. DIR_METADATA
  78. LICENSE
  79. LICENSE.chromium_os
  80. OWNERS
  81. package.json
  82. PRESUBMIT.py
  83. PRESUBMIT_test.py
  84. PRESUBMIT_test_mocks.py
  85. README.md
  86. SECURITY_OWNERS
  87. WATCHLISTS
README.md

Logo Chromium

Chromium is an open-source browser project that aims to build a safer, faster, and more stable way for all users to experience the web.

The project's web site is https://www.chromium.org.

To check out the source code locally, don't use git clone! Instead, follow the instructions on how to get the code.

Documentation in the source is rooted in docs/README.md.

Learn how to Get Around the Chromium Source Code Directory Structure.

For historical reasons, there are some small top level directories. Now the guidance is that new top level directories are for product (e.g. Chrome, Android WebView, Ash). Even if these products have multiple executables, the code should be in subdirectories of the product.

If you found a bug, please file it at https://crbug.com/new.