[NTP Customizatin for MVT] Update MVT Visibility

This CL updates the visibility of the MVT section in NTP by:

1. Implementing logic for the MVT visibility toggle within the NTP
customization bottom sheet. This is achieved by adding an MVT listener
to the bottom sheet.

2. Adding logic to the NTP to fetch the MVT section's visibility state
from Shared Preferences. This state is used to update the MVT section's
visibility immediately after its initialization.

The user interaction is demonstrated in the following videos:

(part1)
https://drive.google.com/file/d/1XgjJRxc0AhQT4-Z7UkuIVyzj52d00ZJH/view?usp=sharing&resourcekey=0-hKyjVV_7JV3DP9swmuyJwg

(part2)
https://drive.google.com/file/d/1gIbqnMvR7b-ji-vMvSTQAxHrtR6BMLAT/view?usp=sharing&resourcekey=0-uSSXnkD4-eJpO4JRYGaGYg

Bug: 421436204
Change-Id: Ib48bedd19efe96fd66e81d16ee893040d1479866
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6704283
Reviewed-by: Xi Han <hanxi@chromium.org>
Reviewed-by: Jian Li <jianli@chromium.org>
Commit-Queue: Yanling Hu <yanlinghu@google.com>
Cr-Commit-Position: refs/heads/main@{#1485150}
18 files changed
tree: 59a963236b5786a0255bb11304a613aa62b24c97
  1. .github/
  2. android_webview/
  3. apps/
  4. ash/
  5. base/
  6. build/
  7. build_overrides/
  8. buildtools/
  9. cc/
  10. chrome/
  11. chromecast/
  12. chromeos/
  13. codelabs/
  14. components/
  15. content/
  16. crypto/
  17. dbus/
  18. device/
  19. docs/
  20. extensions/
  21. fuchsia_web/
  22. gin/
  23. google_apis/
  24. gpu/
  25. headless/
  26. infra/
  27. ios/
  28. ipc/
  29. media/
  30. mojo/
  31. net/
  32. pdf/
  33. ppapi/
  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. .git-blame-ignore-revs
  54. .gitallowed
  55. .gitattributes
  56. .gitignore
  57. .gitmodules
  58. .gn
  59. .mailmap
  60. .rustfmt.toml
  61. .vpython3
  62. .yapfignore
  63. ATL_OWNERS
  64. AUTHORS
  65. BUILD.gn
  66. CODE_OF_CONDUCT.md
  67. codereview.settings
  68. CPPLINT.cfg
  69. CRYPTO_OWNERS
  70. DEPS
  71. DIR_METADATA
  72. LICENSE
  73. LICENSE.chromium_os
  74. OWNERS
  75. PRESUBMIT.py
  76. PRESUBMIT_test.py
  77. PRESUBMIT_test_mocks.py
  78. README.md
  79. SECURITY_OWNERS
  80. WATCHLISTS
README.md

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