Reland "webrtc: ensure tracks are muted initially and unmute when a packet arrives"

This is a reland of commit 059f14c1e8e20cb709c103ee818b8b7244e3dd85
with expectation updates from the reverted first reland:
  https://chromium-review.googlesource.com/c/chromium/src/+/6648150

Original change's description:
> webrtc: ensure tracks are muted initially and unmute when a packet arrives
>
> fixing a long-standing bug wherein the track was muted in ontrack but unumuted immediately after setRemoteDescription.
>
> Also fix tests and split up the unmute test to make it easier to understand.
>
> Bug: chromium:40821064
> Change-Id: I91c45d841f519143f0efe3b32be5da88078aeeb7
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6625939
> Commit-Queue: Philipp Hancke <philipp.hancke@googlemail.com>
> Reviewed-by: Guido Urdaneta <guidou@chromium.org>
> Reviewed-by: Harald Alvestrand <hta@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#1473896}

Bug: chromium:40821064
Change-Id: Ie9ade6e6495dd895cb57beb67e7be14af814055d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6650769
Reviewed-by: Guido Urdaneta <guidou@chromium.org>
Commit-Queue: Philipp Hancke <philipp.hancke@googlemail.com>
Reviewed-by: Harald Alvestrand <hta@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1494859}
9 files changed
tree: a44640e4c717c61a52b6455f86025eb316f9b1e3
  1. .github/
  2. agents/
  3. android_webview/
  4. apps/
  5. ash/
  6. base/
  7. build/
  8. build_overrides/
  9. buildtools/
  10. cc/
  11. chrome/
  12. chromecast/
  13. chromeos/
  14. codelabs/
  15. components/
  16. content/
  17. crypto/
  18. dbus/
  19. device/
  20. docs/
  21. extensions/
  22. fuchsia_web/
  23. gin/
  24. google_apis/
  25. gpu/
  26. headless/
  27. infra/
  28. ios/
  29. ipc/
  30. media/
  31. mojo/
  32. net/
  33. pdf/
  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. .cursorignore
  53. .geminiignore
  54. .git-blame-ignore-revs
  55. .gitallowed
  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. CPPLINT.cfg
  70. CRYPTO_OWNERS
  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. SECURITY_OWNERS
  81. WATCHLISTS
README.md

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