[Accessibility] remove additional role setting for column header

Currently, While navigating in table row cells in sortable column,
column header text is not associated with cell content.

The root cause is that we set the role for column header to be button
if it's sortable, which causing screen reader won't identify the
associated column header of the cell. With the extra text 'Press enter
to apply sorting filter', users have enough information to interact
with column header. Thus, remove this line to allow column header text
associated with cell content. Now using 'ctrl+shift+alt+up' key on cell,
screen reader will announce its column header info even if it's in
sortable column.

Bug: none
Change-Id: Ib4a2f683a0d15e241887f9bcfbc03ad4434bf067
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/4559346
Reviewed-by: Jack Franklin <jacktfranklin@chromium.org>
Commit-Queue: Yanling Wang <yanlingwang@microsoft.com>
1 file changed
tree: 2b19df75ddcc223c375a2bc664ce9d6024f10775
  1. .vscode/
  2. build_overrides/
  3. config/
  4. docs/
  5. extension-api/
  6. front_end/
  7. inspector_overlay/
  8. node_modules/
  9. scripts/
  10. test/
  11. third_party/
  12. v8/
  13. .clang-format
  14. .editorconfig
  15. .eslintignore
  16. .eslintrc.js
  17. .git-blame-ignore-revs
  18. .gitattributes
  19. .gitignore
  20. .gn
  21. .mailmap
  22. .npmignore
  23. .npmrc
  24. .style.yapf
  25. .stylelintignore
  26. .stylelintrc.json
  27. AUTHORS
  28. BUILD.gn
  29. codereview.settings
  30. DEPS
  31. LICENSE
  32. OWNERS
  33. package-lock.json
  34. package.json
  35. PRESUBMIT.py
  36. README.md
  37. tsconfig.json
  38. WATCHLISTS
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