Disable MediaPlaybackService

[zhongqiliang]

Submit #2184 again.

Replaced MediaModule mediaModule = MediaModule(nullptr, nullptr); with MediaModule mediaModule(nullptr, nullptr); in cobalt/media/media_module_test.cc.

b/319146388

[datadog-cobalt-youtube]

Datadog Report

Branch report: revert-2211-revert-2184-disable_background_playback
Commit report: 9d70021
Test service: cobalt

✅ 0 Failed, 29853 Passed, 1 Skipped, 31m 34.7s Wall Time
❄️ 2 New Flaky

New Flaky Tests (2)

• DrainingSlot/0 - SlotManagementTests/SlotManagementTest - Last Failure

  Expand for error

   ../../starboard/loader_app/slot_management_test.cc:136
   Expected equality of these values:
     exists
       Which is: false
     SbFileExists(bad_app_key_file_path.c_str())
       Which is: true
  

• DrainingSlot/1 - SlotManagementTests/SlotManagementTest - Last Failure

  Expand for error

   ../../starboard/loader_app/slot_management_test.cc:136
   Expected equality of these values:
     exists
       Which is: false
     SbFileExists(bad_app_key_file_path.c_str())
       Which is: true
  

[codecov]

Codecov Report

Attention: 5 lines in your changes are missing coverage. Please review.

Comparison is base (1f2d96b) 58.52% compared to head (9d70021) 58.53%.
Report is 21 commits behind head on main.

Files	Patch %	Lines
cobalt/media/media_module.cc	61.53%	5 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2212   +/-   ##
=======================================
  Coverage   58.52%   58.53%           
=======================================
  Files        1907     1908    +1     
  Lines       94568    94584   +16     
=======================================
+ Hits        55349    55365   +16     
  Misses      39219    39219           

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