Revert "zoom: refactor ChromeZoomLevelPrefs"

This reverts commit f487dcfb79591e7eea8581f2317a8197b788a055.

Reason for revert: https://crbug.com/1267308

Original change's description:
> zoom: refactor ChromeZoomLevelPrefs
>
> This change refactors this class with the primary goal of getting rid of
> uses of the deprecated base::DictionaryValue shim class. Specifically,
> it:
>
> 1. Reworks ExtractPerHostZoomLevels to no longer support leaving
>    invalid keys in the pref dictionary
> 2. Removes the backward-compatibility path where the zoom level
>    isn't stored as a dictionary but rather as a single double
> 3. Removes a redundant deep copy of the host map
> 4. Reworks GetTimeStamp into TimeFromString, and generally makes more
>    use of absl::optional and less use of the out param + bool return
>    pattern
>
> Bug: 420643
> Change-Id: I3c875847c3ad11dc55cf28b68a8c63dee526e6c1
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3015672
> Commit-Queue: Elly Fong-Jones <ellyjones@chromium.org>
> Reviewed-by: W. James MacLean <wjmaclean@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#938406}

Bug: 420643
Change-Id: I83a735591162da6b4c969dd2b46813804c4864f3
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3264404
Auto-Submit: Elly Fong-Jones <ellyjones@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Elly Fong-Jones <ellyjones@chromium.org>
Reviewed-by: Elly Fong-Jones <ellyjones@chromium.org>
Reviewed-by: anthonyvd <anthonyvd@chromium.org>
Owners-Override: anthonyvd <anthonyvd@chromium.org>
Cr-Commit-Position: refs/heads/main@{#938841}
3 files changed
tree: acb2525ad88ad7b69242eb3cb0ba5c53438fba8c
  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. cloud_print/
  13. codelabs/
  14. components/
  15. content/
  16. courgette/
  17. crypto/
  18. dbus/
  19. device/
  20. docs/
  21. extensions/
  22. fuchsia/
  23. gin/
  24. google_apis/
  25. google_update/
  26. gpu/
  27. headless/
  28. infra/
  29. ios/
  30. ipc/
  31. jingle/
  32. media/
  33. mojo/
  34. native_client_sdk/
  35. net/
  36. pdf/
  37. ppapi/
  38. printing/
  39. remoting/
  40. rlz/
  41. sandbox/
  42. services/
  43. skia/
  44. sql/
  45. storage/
  46. styleguide/
  47. testing/
  48. third_party/
  49. tools/
  50. ui/
  51. url/
  52. weblayer/
  53. .clang-format
  54. .clang-tidy
  55. .eslintrc.js
  56. .git-blame-ignore-revs
  57. .gitattributes
  58. .gitignore
  59. .gn
  60. .mailmap
  61. .rustfmt.toml
  62. .vpython
  63. .vpython3
  64. .yapfignore
  65. AUTHORS
  66. BUILD.gn
  67. CODE_OF_CONDUCT.md
  68. codereview.settings
  69. DEPS
  70. DIR_METADATA
  71. ENG_REVIEW_OWNERS
  72. LICENSE
  73. LICENSE.chromium_os
  74. OWNERS
  75. PRESUBMIT.py
  76. PRESUBMIT_test.py
  77. PRESUBMIT_test_mocks.py
  78. README.md
  79. WATCHLISTS
README.md

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