- `memory_pressure_controller` finally - allows deletion of pid_controller throughout the codebase
- `overload_protection` - one of the http2 rapid reset mitigations
- `red_max_concurrent_streams` - another http2 rapid reset mitigation
Closes#35426
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/35426 from ctiller:new-years-cleanse 4651672e7e
PiperOrigin-RevId: 595205029
Required elements of gRPC Core: Each module in this directory is required to
build gRPC. If it's possible to envisage a configuration where code is not
required, then that code belongs in ext/ instead.
NOTE: The movement of code between lib and ext is an ongoing effort, so this
directory currently contains too much of the core library.