Use term as the ARIA and internal role for the dt element

The ARIA role is specified here:
https://www.w3.org/TR/html-aam-1.0/#el-dt

That spec defers to the core-aam spec, which indicates platform
mappings:
https://www.w3.org/TR/core-aam-1.2/#role-map-term

In particular, it says term maps to IA2_ROLE_TEXT_FRAME under MSAA + IAccessible2.

There are also some changes to induce CollectionItemInfos for some
terms, which is I think due to the changes in browser_accessibility_android.cc

Otherwise, the mappings for kDescriptionListTerm and kTerm appear to
be the same.

AX-Relnotes: n/a.

Bug: 41490744

Change-Id: I132d6f0e017b9b189281de018754d6cc7746bb14
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5322048
Reviewed-by: Chris Bookholt <bookholt@chromium.org>
Commit-Queue: Aaron Leventhal <aleventhal@chromium.org>
Reviewed-by: David Tseng <dtseng@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1269599}
33 files changed
tree: b07ae8f0271dc82f0c77ed98da4965c6b94bd054
  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. courgette/
  16. crypto/
  17. dbus/
  18. device/
  19. docs/
  20. extensions/
  21. fuchsia_web/
  22. gin/
  23. google_apis/
  24. google_update/
  25. gpu/
  26. headless/
  27. infra/
  28. ios/
  29. ipc/
  30. media/
  31. mojo/
  32. native_client_sdk/
  33. net/
  34. pdf/
  35. ppapi/
  36. printing/
  37. remoting/
  38. rlz/
  39. sandbox/
  40. services/
  41. skia/
  42. sql/
  43. storage/
  44. styleguide/
  45. testing/
  46. third_party/
  47. tools/
  48. ui/
  49. url/
  50. webkit/
  51. .clang-format
  52. .clang-tidy
  53. .clangd
  54. .eslintrc.js
  55. .git-blame-ignore-revs
  56. .gitallowed
  57. .gitattributes
  58. .gitignore
  59. .gitmodules
  60. .gn
  61. .mailmap
  62. .rustfmt.toml
  63. .vpython3
  64. .yapfignore
  65. ATL_OWNERS
  66. AUTHORS
  67. BUILD.gn
  68. CODE_OF_CONDUCT.md
  69. codereview.settings
  70. DEPS
  71. DIR_METADATA
  72. LICENSE
  73. LICENSE.chromium_os
  74. OWNERS
  75. PRESUBMIT.py
  76. PRESUBMIT_test.py
  77. PRESUBMIT_test_mocks.py
  78. README.md
  79. WATCHLISTS
README.md

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