[M146-desktop-respin] Make LimitedLayerEntropyCostTracker time-aware.

This change modifies the LimitedLayerEntropyCostTracker to account for
the entropy cost of studies that are active at a specific evaluation
time. The evaluation time is passed to the tracker's constructor and is
used to check against the study's filter dates and Google web visibility
dates.

The current time for entropy evaluation is sourced from
VariationsIdsProvider.

(cherry picked from commit 2ec2c50b47686def251947a2675a207863803cac)

Bug: 490248046, 490432663
Change-Id: I3174730f35b037d533bf10b2b1d0531e3781acfe
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7639358
Reviewed-by: Alexei Svitkine <asvitkine@chromium.org>
Commit-Queue: Alexei Svitkine <asvitkine@chromium.org>
Cr-Original-Commit-Position: refs/heads/main@{#1595543}
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7637760
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/branch-heads/7680_65@{#23}
Cr-Branched-From: efe36a9d42443b4091a5be1be21e93ceff9b7a5e-refs/branch-heads/7680@{#1898}
Cr-Branched-From: 76b7d80e5cda23fe6537eed26d68c92e995c7f39-refs/heads/main@{#1582197}
8 files changed
tree: 58e25c3a034d8483497baaa090070af6b19d0e69
  1. .claude/
  2. .gemini/
  3. .github/
  4. agents/
  5. android_webview/
  6. apps/
  7. ash/
  8. base/
  9. build/
  10. build_overrides/
  11. buildtools/
  12. cc/
  13. chrome/
  14. chromecast/
  15. chromeos/
  16. codelabs/
  17. components/
  18. content/
  19. crypto/
  20. dbus/
  21. device/
  22. docs/
  23. extensions/
  24. fuchsia_web/
  25. gin/
  26. google_apis/
  27. gpu/
  28. headless/
  29. infra/
  30. ios/
  31. ipc/
  32. media/
  33. mojo/
  34. net/
  35. pdf/
  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. .cursorignore
  55. .geminiignore
  56. .git-blame-ignore-revs
  57. .gitallowed
  58. .gitattributes
  59. .gitignore
  60. .gitmodules
  61. .gn
  62. .mailmap
  63. .rustfmt.toml
  64. .vpython3
  65. .yapfignore
  66. ATL_OWNERS
  67. AUTHORS
  68. BUILD.gn
  69. CODE_OF_CONDUCT.md
  70. codereview.settings
  71. CPPLINT.cfg
  72. CRYPTO_OWNERS
  73. DEPS
  74. DIR_METADATA
  75. LICENSE
  76. LICENSE.chromium_os
  77. OWNERS
  78. package.json
  79. PRESUBMIT.py
  80. PRESUBMIT_test.py
  81. PRESUBMIT_test_mocks.py
  82. README.md
  83. SECURITY_OWNERS
  84. WATCHLISTS
README.md

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