[Reader mode] Fixed reader mode not working on Incognito tabs

We recently changed the entry point for reader mode to use a contextual toolbar button instead of the previous message implementation. This resulted in a more stable experience as the button wasn't as loud so it needed no rate limiting.

This contextual toolbar button is not available on incognito tabs as the underlying segmentation service is not available on OTR profiles. This CL restores the previous message entry point when opening reader mode pages on incognito tabs.

A similar approach is already done on CCT tabs.

Bug: 328182250
Change-Id: I893b636df5c9e7326c5b5b4793b7a41aabdc8b50
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5503374
Reviewed-by: Matthew Jones <mdjones@chromium.org>
Commit-Queue: Salvador Guerrero Ramos <salg@google.com>
Cr-Commit-Position: refs/heads/main@{#1294638}
2 files changed
tree: 9910c7d48b20aed2f3407fa60537fdf1abb8fa2e
  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. CPPLINT.cfg
  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. WATCHLISTS
README.md

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