[Bookmarks Bar] Anchored popup with submenu logic

When a folder in the bookmarks bar is tapped, a popup should appear. If the folder has any nested folders, the popup should show those too.

After: https://screencast.googleplex.com/cast/NjU0ODUwMzM5MTEwOTEyMHxiNGJlNDZmMC02ZQ

This UI change is guarded behind the feature flag android-bookmark-bar.
Further changes will be chained to this CL.

Bug: 430044890
Change-Id: Ie9995b29f38c6590900f03427bc40c9f23d8bdb8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6810485
Reviewed-by: Wenyu Fu <wenyufu@chromium.org>
Commit-Queue: Eleanor Lee <eleanorlee@google.com>
Reviewed-by: Mark Schillaci <mschillaci@google.com>
Reviewed-by: Brandon Wylie <wylieb@google.com>
Cr-Commit-Position: refs/heads/main@{#1497139}
5 files changed
tree: 649bb1aa457e658400c62ba5d15e25c9241ad89c
  1. .github/
  2. agents/
  3. android_webview/
  4. apps/
  5. ash/
  6. base/
  7. build/
  8. build_overrides/
  9. buildtools/
  10. cc/
  11. chrome/
  12. chromecast/
  13. chromeos/
  14. codelabs/
  15. components/
  16. content/
  17. crypto/
  18. dbus/
  19. device/
  20. docs/
  21. extensions/
  22. fuchsia_web/
  23. gin/
  24. google_apis/
  25. gpu/
  26. headless/
  27. infra/
  28. ios/
  29. ipc/
  30. media/
  31. mojo/
  32. net/
  33. pdf/
  34. printing/
  35. remoting/
  36. rlz/
  37. sandbox/
  38. services/
  39. skia/
  40. sql/
  41. storage/
  42. styleguide/
  43. testing/
  44. third_party/
  45. tools/
  46. ui/
  47. url/
  48. webkit/
  49. .clang-format
  50. .clang-tidy
  51. .clangd
  52. .cursorignore
  53. .geminiignore
  54. .git-blame-ignore-revs
  55. .gitallowed
  56. .gitattributes
  57. .gitignore
  58. .gitmodules
  59. .gn
  60. .mailmap
  61. .rustfmt.toml
  62. .vpython3
  63. .yapfignore
  64. ATL_OWNERS
  65. AUTHORS
  66. BUILD.gn
  67. CODE_OF_CONDUCT.md
  68. codereview.settings
  69. CPPLINT.cfg
  70. CRYPTO_OWNERS
  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. SECURITY_OWNERS
  81. WATCHLISTS
README.md

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