[TabletGTS] Fix a11y list tab switcher crash when GTS flag enabled

Fix a11y list tab switcher crash when GTS flag enabled.

Currently, we have logic to show the normal browsing layout when the
final tab is closed and the grid tab switcher is enabled. We only want
to do this when the grid tab switcher, not the a11y list switcher, is
actually showing. Update logic to account for when the a11y list tab
switcher is showing.

Video: https://drive.google.com/file/d/14UocTWnxW5XHJ8R1OXegibd-Iyhv4jKO/view?usp=sharing

Bug: 1301698
Change-Id: I1b571eded76ccf18e0d572a147d9fc72bee441d4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3508342
Reviewed-by: Theresa Sullivan <twellington@chromium.org>
Commit-Queue: Neil Coronado <nemco@google.com>
Cr-Commit-Position: refs/heads/main@{#979008}
1 file changed
tree: 41807f76951142046e11f71f4057c4e5142b8bab
  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. media/
  32. mojo/
  33. native_client_sdk/
  34. net/
  35. pdf/
  36. ppapi/
  37. printing/
  38. remoting/
  39. rlz/
  40. sandbox/
  41. services/
  42. skia/
  43. sql/
  44. storage/
  45. styleguide/
  46. testing/
  47. third_party/
  48. tools/
  49. ui/
  50. url/
  51. weblayer/
  52. .clang-format
  53. .clang-tidy
  54. .eslintrc.js
  55. .git-blame-ignore-revs
  56. .gitattributes
  57. .gitignore
  58. .gn
  59. .mailmap
  60. .rustfmt.toml
  61. .vpython
  62. .vpython3
  63. .yapfignore
  64. AUTHORS
  65. BUILD.gn
  66. CODE_OF_CONDUCT.md
  67. codereview.settings
  68. DEPS
  69. DIR_METADATA
  70. ENG_REVIEW_OWNERS
  71. LICENSE
  72. LICENSE.chromium_os
  73. OWNERS
  74. PRESUBMIT.py
  75. PRESUBMIT_test.py
  76. PRESUBMIT_test_mocks.py
  77. README.md
  78. WATCHLISTS
README.md

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