[Chromecast] Do not acquire audio focus when media is blocked.

This restores the 'is_remote_control_mode' variable that was
renamed in crrev.com/c/4150205, but moves the point at
which it decides whether to request audio focus to the native
CastContentWindowAndroid class.

The prior patch was insufficient because the media block state
was not initialized in the application's constructor, so the
decision to acquire audio focus needs to be delayed after
constructing the CastWebView until the actual UI needs to be
started.

CastContentWindowAndroid will tell CastWebContentsComponent to
request audio focus only if the app is not in remote control
mode and media starting is unblocked. To allow CCWA to know
whether media starting is blocked, this patch adds an accessor
to CastWebContents to obtain the MediaBlocker.

Bug: b/265833890
Test: cast_shell_junit_tests
Change-Id: I79c12a8784fae16790cf843de7ae62146066518f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4179546
Auto-Submit: Simeon Anfinrud <[email protected]>
Reviewed-by: Matthew Denton <[email protected]>
Commit-Queue: Sean Topping <[email protected]>
Reviewed-by: Sean Topping <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1095853}
10 files changed
tree: cf11770a500d5988d14d3ca2945021a1c43b0e58
  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. weblayer/
  51. .clang-format
  52. .clang-tidy
  53. .eslintrc.js
  54. .git-blame-ignore-revs
  55. .gitattributes
  56. .gitignore
  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. DEPS
  68. DIR_METADATA
  69. LICENSE
  70. LICENSE.chromium_os
  71. OWNERS
  72. PRESUBMIT.py
  73. PRESUBMIT_test.py
  74. PRESUBMIT_test_mocks.py
  75. README.md
  76. WATCHLISTS
README.md

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