Fixup HostResolver alias results

Remove the `ipv*_alias_name` values from HostResolverEndpointResult.
We've decided that we won't need them.

Also make some adjustments to the behavior around
ResolveHostParameters::include_canonical_name to match our needs going
forward. The parameter now always ensures the system resolver is used
(DCHECKing on cases where other parameters prevent that) and the
GetDnsAliasResults() now returns exactly the single canonical name
received from the system resolver without any modification (matching
what could currently be read from
`GetAddressResults()->GetCanonicalName()`. While theoretically a
behavior change, this shouldn't actually affect any of the current
non-test usage because the parameter is only set when the system
resolver can be used and only getting the name from GetCanonicalName().
And alias names are now always included, if known, in
GetDnsAliasResults() regardless of the parameter (as was already the
case, but now it's documented and tested as such).

Also some test cleanups to add more reliance on GetDnsAiasResults() in
anticipation of reducing alias availability in address results.

Bug: 1264933
Change-Id: Iedc5f1eaa7aa01d3a34753e1ff0687d294b2b057
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3346200
Reviewed-by: David Benjamin <[email protected]>
Commit-Queue: Eric Orth <[email protected]>
Cr-Commit-Position: refs/heads/main@{#953923}
8 files changed
tree: f60925c3a884a72d8e2f1e4f8f55697879f6325e
  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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