There are multiple problems in the test:
1. The controller must run on the main thread due to the Player
interface requirement to add surfaces on the thread their
callbacks will be called on.
2. This test made assertions about an expected callback that
aren't true. Setting an anonymous surface will not result in
a size change callback because the size stays unknown.
But clearing a surface (even if never set) ensures the returned
size is guaranteed to be zero.
PiperOrigin-RevId: 559080905
a00bef9e51