android audio: Set communication mode when using Bluetooth microphone

Setting communication mode is necessary to trigger the Android
audio manager to switch the audio output from A2DP to SCO, ensuring
proper audio routing to prevent no sound issues when using the
Bluetooth headset.

BUG=b:349290689
TEST=Meet audio come from bluetooth headset when bluetooth mic is
enabled
TEST=https://webrtc.github.io/samples/src/content/getusermedia/audio
work properly with classic bluetooth headset with pre Android S and
Android S+ device.

Change-Id: I2167806d5eac6165b236a5a104cfd2e190d83248
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5970174
Reviewed-by: Thomas Guilbert <tguilbert@chromium.org>
Commit-Queue: Ching Yun Chang <whalechang@google.com>
Cr-Commit-Position: refs/heads/main@{#1378144}
7 files changed
tree: 8c9643ed7c0bcb35a00bab5384ec51bf7621b156
  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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