Implement empty CSSToggleMap and CSSToggle interfaces on existing objects.

This corrects a mistake where I was expecting to implement the spec's
interfaces using objects that were distinct from the implementation.
However, the spec's interfaces are close enough to the implementation
objects that they should be on the same objects.

Thus this CL creates the spec's interfaces as *empty* interfaces and
renames the existing objects (Toggle to CSSToggle, ToggleData to
CSSToggleMap) to implement them.

Later CLs will put the contents of the interfaces in and implement them
on these objects.

(Support for toggles is behind the CSSToggles flag, which is currently
off.)

Bug: 1250716
Change-Id: I36ce7a0687585c5b47ce8e03afdae8da1e7a754e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3828194
Reviewed-by: Joey Arhar <jarhar@chromium.org>
Commit-Queue: David Baron <dbaron@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1036337}
20 files changed
tree: dea0709ac0133f0b49434be41b9555d931fe1287
  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. weblayer/
  51. .clang-format
  52. .clang-tidy
  53. .eslintrc.js
  54. .git-blame-ignore-revs
  55. .gitattributes
  56. .gitignore
  57. .gn
  58. .mailmap
  59. .rustfmt.toml
  60. .vpython
  61. .vpython3
  62. .yapfignore
  63. AUTHORS
  64. BUILD.gn
  65. CODE_OF_CONDUCT.md
  66. codereview.settings
  67. DEPS
  68. DIR_METADATA
  69. ENG_REVIEW_OWNERS
  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

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