[Extensions] Clean up some dependencies in the bookmarks API.

This CL addresses the following issues:

1. ExtensionActivityMonitor needlessly references BookmarkFunction,
which breaks layering. This is fixed by changed interfaces to use
the ExtensionFunction base class. Since BookmarkFunction doesn't
add any new public member functions, this doesn't result in any loss
of information. Also, the observer API includes a parameter for the
calling extension, but that information is available from the
ExtensionFunction instance, so this parameter is unneeded.

2. Some general cleanup, including adding braces and using
base::MakeRefCounted.

This change allows for moving BookmarksApiWatcher into a separate
source set in a future CL and reduces coupling between the bookmarks
API and the sync subsystem. There is also a possibility to move
BookmarksApiWatcher into extensions/browser/api/bookmarks by
making BookmarksApiWatcherFactory a BrowserContextKeyedServiceFactory
instead of a ProfileKeyedServiceFactory.

It may be worth considering a more generic way to observe function
dispatch in extensions/browser, which would further reduce coupling.

Bug: 40593486
Change-Id: I8faeace4f55823270f53bf83844e8bc9caf43962
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5794220
Reviewed-by: Devlin Cronin <rdevlin.cronin@chromium.org>
Code-Coverage: findit-for-me@appspot.gserviceaccount.com <findit-for-me@appspot.gserviceaccount.com>
Reviewed-by: Jood Hajeer <jood@google.com>
Auto-Submit: David Bertoni <dbertoni@chromium.org>
Commit-Queue: David Bertoni <dbertoni@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1343686}
6 files changed
tree: 62c4b2a048c9d8e166167b00719fa5a2ca5dfd4e
  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. CRYPTO_OWNERS
  72. DEPS
  73. DIR_METADATA
  74. LICENSE
  75. LICENSE.chromium_os
  76. OWNERS
  77. PRESUBMIT.py
  78. PRESUBMIT_test.py
  79. PRESUBMIT_test_mocks.py
  80. README.md
  81. WATCHLISTS
README.md

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