Protected Audiences: Cache loaded interest groups

Loading interest groups is slow, and they are loaded for each auction and component auction on a page. A cache for interest group loading can speed up the auction by removing repetitive loads.

This change introduces a new class, InterestGroupCachingStorage which wraps around InterestGroupStorage and provides access to an owner's interest groups that are already in memory if available instead of loading them from the database each time (it also handles cache invalidation when values are changed).

The new class is not yet used anywhere. In a following change, InterestGroupCachingStorage will be used by the InterestGroupManager in place of InterestGroupStorage.

Bug: 1440817
Change-Id: I63daf68e60a70b25bebc1ab8091f5c0481acf2f1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4916973
Reviewed-by: Russ Hamilton <behamilton@google.com>
Commit-Queue: Abigail Katcoff <abigailkatcoff@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1207696}
5 files changed
tree: 0b9bba7615a8d10a81d83fa2a24db244e7bc83d3
  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

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