Reland "[base] Add NO_UNIQUE_ADDRESS attribute"

This reverts commit d3d9bac004ab0c24623460de1da14418211adb0f.

Reason for revert: https://bugs.llvm.org/show_bug.cgi?id=48048 got fixed.

Original change's description:
> Revert "[base] Add NO_UNIQUE_ADDRESS attribute"
>
> This reverts commit d3742a4b80f2ad07fd8ccd111c67726ce9cf1c7f.
>
> Reason for revert: https://crbug.com/1144431
> Bug: 1144431
>
> Original change's description:
> > [base] Add NO_UNIQUE_ADDRESS attribute
> >
> > This change adds the HAS_CPP_ATTRIBUTE and NO_UNIQUE_ADDRESS macros to
> > base/compiler_specific.h. This allows using the C++20 no_unique_address
> > attribute in prior dialects if the compiler supports it.
> >
> > Bug: None
> > Change-Id: I6aff82e7b195f5eaf93551049c9dfa6a3fd1fbc6
> > Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2510396
> > Reviewed-by: Daniel Cheng <[email protected]>
> > Commit-Queue: Jan Wilken Dörrie <[email protected]>
> > Cr-Commit-Position: refs/heads/master@{#822768}
>
> [email protected],[email protected]
>
> # Not skipping CQ checks because original CL landed > 1 day ago.
>
> Bug: None
> Change-Id: I375099e835dbc7d4cab98cc15faf66124335bb0e
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2514208
> Commit-Queue: Jan Wilken Dörrie <[email protected]>
> Reviewed-by: Jan Wilken Dörrie <[email protected]>
> Cr-Commit-Position: refs/heads/master@{#823202}

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: 1144431
Bug: None
Change-Id: Ieffa10dce233eb19f7dbfbcea449ea08e2f2b1cf
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2546008
Reviewed-by: Daniel Cheng <[email protected]>
Commit-Queue: Jan Wilken Dörrie <[email protected]>
Cr-Commit-Position: refs/heads/master@{#830147}
2 files changed
tree: 25ec2db47d0e51524a7f0afc83e8d27c0c61ab79
  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. cloud_print/
  13. codelabs/
  14. components/
  15. content/
  16. courgette/
  17. crypto/
  18. dbus/
  19. device/
  20. docs/
  21. extensions/
  22. fuchsia/
  23. gin/
  24. google_apis/
  25. google_update/
  26. gpu/
  27. headless/
  28. infra/
  29. ios/
  30. ipc/
  31. jingle/
  32. media/
  33. mojo/
  34. native_client_sdk/
  35. net/
  36. pdf/
  37. ppapi/
  38. printing/
  39. remoting/
  40. rlz/
  41. sandbox/
  42. services/
  43. skia/
  44. sql/
  45. storage/
  46. styleguide/
  47. testing/
  48. third_party/
  49. tools/
  50. ui/
  51. url/
  52. weblayer/
  53. .clang-format
  54. .clang-tidy
  55. .eslintrc.js
  56. .git-blame-ignore-revs
  57. .gitattributes
  58. .gitignore
  59. .gn
  60. .vpython
  61. .vpython3
  62. .yapfignore
  63. AUTHORS
  64. BUILD.gn
  65. CODE_OF_CONDUCT.md
  66. codereview.settings
  67. DEPS
  68. DIR_METADATA
  69. ENG_REVIEW_OWNERS
  70. LICENSE
  71. LICENSE.chromium_os
  72. OWNERS
  73. PRESUBMIT.py
  74. PRESUBMIT_test.py
  75. PRESUBMIT_test_mocks.py
  76. README.md
  77. WATCHLISTS
README.md

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