[Hub] Integrate with Chrome

This makes Hub start working with Chrome. Once this lands if the flag is
enabled the Hub will show with an animation. Note that there is nothing
there yet so this intentionally makes the Tab Switcher button do nothing
if the flag is enabled. We can't even exit the Hub due to not having
back-button support yet.

This re-uses the Tablet's tab_switcher_view_holder so that the Hub
appears in front of the composited UI and toolbar. This is beneficial as
this means it shouldn't be necessary to modify the toolbar other than
outright disabling the Start Surface and Tab Switcher toolbars when
Hub is enabled.

For testing the CL trials using Public Transit for the testing
framework. This testing framework is still experimental, but seems
sufficient for a basic testcase.

Binary-Size: Build starts to include an entire new feature.
Bug: 1497472
Change-Id: Ieb9bb3290a3efdf0afa1318aa4b42222d3e39354
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4985963
Reviewed-by: Sky Malice <skym@chromium.org>
Code-Coverage: findit-for-me@appspot.gserviceaccount.com <findit-for-me@appspot.gserviceaccount.com>
Commit-Queue: Calder Kitagawa <ckitagawa@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1220459}
16 files changed
tree: 2edaa21506c1e7b2c10788a0d3f690661b8ee055
  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. .eslintrc.js
  54. .git-blame-ignore-revs
  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. DEPS
  69. DIR_METADATA
  70. LICENSE
  71. LICENSE.chromium_os
  72. OWNERS
  73. PRESUBMIT.py
  74. PRESUBMIT_test.py
  75. PRESUBMIT_test_mocks.py
  76. README.md
  77. WATCHLISTS
README.md

Logo Chromium

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To check out the source code locally, don't use git clone! Instead, follow the instructions on how to get the code.

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