Throwing Error forces a test to catch Throwable (e.g.
DashWidevineOfflineTest#widevineOfflineReleasedV22), which will also
catch AssertionError meaning the fail() call at the end of the try block
won't work.
The DashWidevineOfflineTest have been broken since
https://github.com/google/ExoPlayer/commit/91185500a1242b99b86b18bc9f3449d3dac1fa01
PiperOrigin-RevId: 331120894
