Delay expiry of frequently used histograms.

Updates the expires_after attribute for 474 histograms that show
frequent access in the past 180 days.  These are the 99% most
frequently used histograms over that time that have an expiry date
(or milestone equivalent) between 2025-08-29 and 2025-11-12.

TBR=chromium-metrics-reviews@google.com

Change-Id: I52ce06f9cd3e3a5a1a5152418f3c2a081c36b4b4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6731490
Commit-Queue: Chrome Metrics Logs <chrome-metrics-team+submitter@google.com>
Bot-Commit: Chrome Metrics Logs <chrome-metrics-team+submitter@google.com>
Cr-Commit-Position: refs/heads/main@{#1487127}
78 files changed
tree: 87411f93ddf162a5337a122907e01a3093a3505e
  1. .github/
  2. agents/
  3. android_webview/
  4. apps/
  5. ash/
  6. base/
  7. build/
  8. build_overrides/
  9. buildtools/
  10. cc/
  11. chrome/
  12. chromecast/
  13. chromeos/
  14. codelabs/
  15. components/
  16. content/
  17. crypto/
  18. dbus/
  19. device/
  20. docs/
  21. extensions/
  22. fuchsia_web/
  23. gin/
  24. google_apis/
  25. gpu/
  26. headless/
  27. infra/
  28. ios/
  29. ipc/
  30. media/
  31. mojo/
  32. net/
  33. pdf/
  34. ppapi/
  35. printing/
  36. remoting/
  37. rlz/
  38. sandbox/
  39. services/
  40. skia/
  41. sql/
  42. storage/
  43. styleguide/
  44. testing/
  45. third_party/
  46. tools/
  47. ui/
  48. url/
  49. webkit/
  50. .clang-format
  51. .clang-tidy
  52. .clangd
  53. .cursorignore
  54. .git-blame-ignore-revs
  55. .gitallowed
  56. .gitattributes
  57. .gitignore
  58. .gitmodules
  59. .gn
  60. .mailmap
  61. .rustfmt.toml
  62. .vpython3
  63. .yapfignore
  64. ATL_OWNERS
  65. AUTHORS
  66. BUILD.gn
  67. CODE_OF_CONDUCT.md
  68. codereview.settings
  69. CPPLINT.cfg
  70. CRYPTO_OWNERS
  71. DEPS
  72. DIR_METADATA
  73. LICENSE
  74. LICENSE.chromium_os
  75. OWNERS
  76. PRESUBMIT.py
  77. PRESUBMIT_test.py
  78. PRESUBMIT_test_mocks.py
  79. README.md
  80. SECURITY_OWNERS
  81. WATCHLISTS
README.md

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