Revert "[Android] Remove workarounds for toolbar appearing under tab switcher"

This reverts commit 394a5b0c9aa96f29876e90d849b853f94324421b.

Reason for revert:
LUCI Bisection has identified this change as the cause of a test failure. See the analysis: https://ci.chromium.org/ui/p/chromium/bisection/test-analysis/b/5717072848879616

Sample build with failed test: https://ci.chromium.org/b/8740040540588693393
Affected test(s):
[ninja://chrome/android:chrome_public_test_apk/org.chromium.chrome.browser.app.appmenu.TabbedAppMenuPTTest#testNewTabPageIncognitoAppMenuItems](https://ci.chromium.org/ui/test/chromium/ninja:%2F%2Fchrome%2Fandroid:chrome_public_test_apk%2Forg.chromium.chrome.browser.app.appmenu.TabbedAppMenuPTTest%23testNewTabPageIncognitoAppMenuItems?q=VHash%3A359dcabdb2bd6ffc)
[ninja://chrome/android:chrome_public_test_apk/org.chromium.chrome.browser.app.appmenu.TabbedAppMenuPTTest#testNewTabPageRegularAppMenuItems](https://ci.chromium.org/ui/test/chromium/ninja:%2F%2Fchrome%2Fandroid:chrome_public_test_apk%2Forg.chromium.chrome.browser.app.appmenu.TabbedAppMenuPTTest%23testNewTabPageRegularAppMenuItems?q=VHash%3A359dcabdb2bd6ffc)
[ninja://chrome/android:chrome_public_test_apk/org.chromium.chrome.browser.app.appmenu.TabbedAppMenuPTTest#testOpenNewIncognitoTab](https://ci.chromium.org/ui/test/chromium/ninja:%2F%2Fchrome%2Fandroid:chrome_public_test_apk%2Forg.chromium.chrome.browser.app.appmenu.TabbedAppMenuPTTest%23testOpenNewIncognitoTab?q=VHash%3A359dcabdb2bd6ffc)
[ninja://chrome/android:chrome_public_test_apk/org.chromium.chrome.browser.app.appmenu.TabbedAppMenuPTTest#testOpenNewTab](https://ci.chromium.org/ui/test/chromium/ninja:%2F%2Fchrome%2Fandroid:chrome_public_test_apk%2Forg.chromium.chrome.browser.app.appmenu.TabbedAppMenuPTTest%23testOpenNewTab?q=VHash%3A359dcabdb2bd6ffc)
[ninja://chrome/android:chrome_public_test_apk/org.chromium.chrome.browser.app.appmenu.TabbedAppMenuPTTest#testOpenSettings](https://ci.chromium.org/ui/test/chromium/ninja:%2F%2Fchrome%2Fandroid:chrome_public_test_apk%2Forg.chromium.chrome.browser.app.appmenu.TabbedAppMenuPTTest%23testOpenSettings?q=VHash%3A359dcabdb2bd6ffc)
and 16 more ...

If this is a false positive, please report it at http://b.corp.google.com/createIssue?component=1199205&description=Analysis%3A+https%3A%2F%2Fci.chromium.org%2Fui%2Fp%2Fchromium%2Fbisection%2Ftest-analysis%2Fb%2F5717072848879616&format=PLAIN&priority=P3&title=Wrongly+blamed+https%3A%2F%2Fchromium-review.googlesource.com%2Fc%2Fchromium%2Fsrc%2F%2B%2F5777727&type=BUG

Original change's description:
> [Android] Remove workarounds for toolbar appearing under tab switcher
>
> Now that the ANDROID_HUB is launched, the buttons don't appear anymore
> in the tab switcher.
>
> Also create descendant() factory methods for ViewSpec to simplify
> declarations of ViewSpecs with isDescendantOfA().
>
> Bug: 41497463
> Change-Id: Ic17be0a350cea70cbd9c7195c62980c3b2f339c8
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5777727
> Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
> Reviewed-by: Calder Kitagawa <ckitagawa@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#1339914}
>

Bug: 41497463
Change-Id: I09169224f470c8e625119f7e83c31c417da511c7
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5778156
Owners-Override: Friedrich Horschig <fhorschig@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Friedrich Horschig <fhorschig@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1340313}
5 files changed
tree: 022e08ca987217f1e91a9b3207646667733cf577
  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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