[iOS][Account]Retry fetching hosted domain with exponential backoff

The Assigner now has an array of identities it must fetch. It uses
the same exponential backoff for all identities, resetting it in case of
success.

It’s not clear what would be the ideal parameters. The policy can
easily be changed without touching of the remaining of the code.
Currently, the decision is:
* to stop only if there are at least five consecutive failures,
(that is, probably some issue to connect to Gaia)
* tries all identities requested at least twice.

In case of repeated fetch failure, current implementation still assign
the identities to the default profile. Deciding what to actually do
in case of repeated failure is outside the scope of this CL.

Bug: 385133710, 331783685
Change-Id: Iad969403978ae181ca710180b90551073c829a54
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6200610
Auto-Submit: Arthur Milchior <arthurmilchior@chromium.org>
Reviewed-by: Marc Treib <treib@chromium.org>
Commit-Queue: Arthur Milchior <arthurmilchior@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1413453}
1 file changed
tree: 6d67b47ffc22286f2dc1a79018eb75225b187f82
  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. crypto/
  16. dbus/
  17. device/
  18. docs/
  19. extensions/
  20. fuchsia_web/
  21. gin/
  22. google_apis/
  23. gpu/
  24. headless/
  25. infra/
  26. ios/
  27. ipc/
  28. media/
  29. mojo/
  30. native_client_sdk/
  31. net/
  32. pdf/
  33. ppapi/
  34. printing/
  35. remoting/
  36. rlz/
  37. sandbox/
  38. services/
  39. skia/
  40. sql/
  41. storage/
  42. styleguide/
  43. testing/
  44. third_party/
  45. tools/
  46. ui/
  47. url/
  48. webkit/
  49. .clang-format
  50. .clang-tidy
  51. .clangd
  52. .git-blame-ignore-revs
  53. .gitallowed
  54. .gitattributes
  55. .gitignore
  56. .gitmodules
  57. .gn
  58. .mailmap
  59. .rustfmt.toml
  60. .vpython3
  61. .yapfignore
  62. ATL_OWNERS
  63. AUTHORS
  64. BUILD.gn
  65. CODE_OF_CONDUCT.md
  66. codereview.settings
  67. CPPLINT.cfg
  68. CRYPTO_OWNERS
  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

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