[sync] Precompute DeviceInfo for each DeviceInfoSpecifics

Eventually, the goal is to improve performance for functions such as
DeviceInfoSyncBridge::GetAllDeviceInfo().

As a first step, the internal map maintained by DeviceInfoSyncBridge is
extended to maintain, for each proto, the converted DeviceInfo class.
This incurs in some memory overhead but it is deemed negligible for the
vast majority of users (a few kilobytes in total for the 99th
percentile).

This change doesn't immediately come with performance benefits as
GetAllDeviceInfo()'s signature enforces the need to make deep copies.
As per added TODOs, follow-up patches will update this signature to
avoid these expensive copies.

Change-Id: I88631d694516954e919299c6da967110440401a5
Bug: b/316374607
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5164029
Code-Coverage: findit-for-me@appspot.gserviceaccount.com <findit-for-me@appspot.gserviceaccount.com>
Reviewed-by: Rushan Suleymanov <rushans@google.com>
Commit-Queue: Mikel Astiz <mastiz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1242476}
4 files changed
tree: f168b7f811284c079e4c9728d76facbff943426d
  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. .gitattributes
  57. .gitignore
  58. .gitmodules
  59. .gn
  60. .mailmap
  61. .rustfmt.toml
  62. .vpython3
  63. .yapfignore
  64. ATL_OWNERS
  65. AUTHORS
  66. BUILD.gn
  67. CODE_OF_CONDUCT.md
  68. codereview.settings
  69. DEPS
  70. DIR_METADATA
  71. LICENSE
  72. LICENSE.chromium_os
  73. OWNERS
  74. PRESUBMIT.py
  75. PRESUBMIT_test.py
  76. PRESUBMIT_test_mocks.py
  77. README.md
  78. WATCHLISTS
README.md

Logo Chromium

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