Remove DanglingUntriaged from MultiThreadedProxyResolver::Job classes.

Each refcounted CreateResolverJob is run by a single Executor on its
own thread. When the Executor is destroyed on the main thread, it
joins the Job's thread to the main thread, cancels the job, and is
then destroyed.

The problem is that CreateResolverJob are refcounted, and there may
be a pending completion task that owns a pointer to the Job. The
tasks themselves will, if run, notice they're cancelled and do
nothing, but the Jobs still have raw pointers to objects they don't
own.

This CL makes CreateResolverJobs override its Job::Cancel() and clear
their pointers when it's invoked. Since Executor calls Cancel()
strictly after joining the Job's thread, this is safe, and it should
prevent any danging pointer warnings.

This CL also makes GetProxyForURLJobs clear their raw pointer in an
overridden Cancel() call. They're much simpler - those Jobs are
owned by RequestImpls, whose owners also own the request_ they
have a raw pointer to.

Bug: 40212619
Change-Id: Id864fe845182ccde3a5b6c626076cbf07c55d8f6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5530196
Reviewed-by: Adam Rice <ricea@chromium.org>
Commit-Queue: mmenke <mmenke@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1305031}
1 file changed
tree: b43ba6206af5ef06c10fe6ee2a620baedee3a7b9
  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. .gitallowed
  57. .gitattributes
  58. .gitignore
  59. .gitmodules
  60. .gn
  61. .mailmap
  62. .rustfmt.toml
  63. .vpython3
  64. .yapfignore
  65. ATL_OWNERS
  66. AUTHORS
  67. BUILD.gn
  68. CODE_OF_CONDUCT.md
  69. codereview.settings
  70. CPPLINT.cfg
  71. DEPS
  72. DIR_METADATA
  73. LICENSE
  74. LICENSE.chromium_os
  75. OWNERS
  76. PRESUBMIT.py
  77. PRESUBMIT_test.py
  78. PRESUBMIT_test_mocks.py
  79. README.md
  80. WATCHLISTS
README.md

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