[tab group v2] adjust space allocation for bookmarks bar

In v2 since bookmark bar can show as many pinned saved tab group as
possible, additional rules are needed to prevent saved tab group
from taking too much space. For more detail please refer to [1].

[1]https://docs.google.com/document/d/1V4WlGI9NE5M830u3IjGfi1jwzdX2B0QMgJ1BnItevUM/edit?usp=sharing

Bug: 334948424
Change-Id: Ic7ada99c768d051fd466dcd4c40a25d7e0f5b7d0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5458140
Reviewed-by: Darryl James <dljames@chromium.org>
Commit-Queue: Yuheng Huang <yuhengh@chromium.org>
Reviewed-by: pengchao Cai <pengchaocai@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1290138}
3 files changed
tree: 3e7bb23c004ff26a8934baf840e1f2161563c371
  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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