Revert "[Nearby] Observe screen idle state events."

This reverts commit 93a5fc5881512ffff499744b5c0f6859e35cef74.

Reason for revert: Reports that discovery and advertising are not starting because the screen is being incorrectly reported as being off. See crbug.com/1170644

Original change's description:
> [Nearby] Observe screen idle state events.
>
> This change lets us observe screen idle state (on/off state) so that
> we can invalidate send and receive surfaces in response.
>
> This also collapses PowerClientChromeos into PowerClient since we no
> longer need to guard Chrome OS-specific functionality.
>
> Fixed: 1169262
> Change-Id: I893df57d113590c0e09a81a381c3a291b74fd00a
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2643918
> Reviewed-by: Ryan Hansberry <[email protected]>
> Commit-Queue: Michael Hansen <[email protected]>
> Cr-Commit-Position: refs/heads/master@{#846278}

[email protected],[email protected],[email protected]

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: 1170644
Change-Id: I8d0a3ceb26afab1153ff9786a1b116f5d4c448ff
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2650140
Reviewed-by: Ryan Hansberry <[email protected]>
Commit-Queue: Michael Hansen <[email protected]>
Cr-Commit-Position: refs/heads/master@{#847671}
9 files changed
tree: 7318c0cd9c0d012b03e1c410ffe5e5e1af558276
  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. .vpython
  61. .vpython3
  62. .yapfignore
  63. AUTHORS
  64. BUILD.gn
  65. CODE_OF_CONDUCT.md
  66. codereview.settings
  67. DEPS
  68. DIR_METADATA
  69. ENG_REVIEW_OWNERS
  70. LICENSE
  71. LICENSE.chromium_os
  72. OWNERS
  73. PRESUBMIT.py
  74. PRESUBMIT_test.py
  75. PRESUBMIT_test_mocks.py
  76. README.md
  77. WATCHLISTS
README.md

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