message: Add compile-time warning for RTC_LOG(INFO)
  Cr-Commit-Position: refs/heads/main@{#35411}
diff: @@ -91,8 +91,10 @@ enum LoggingSeverity {
  LS_NONE,
  // Compatibility aliases, to be deleted.
  // TODO(bugs.webrtc.org/13362): Remove usage and delete.
  - INFO = LS_INFO,
  + INFO [[deprecated("Use LS_INFO")]] = LS_INFO,
  + // WARNING [[deprecated("Use LS_WARNING")]] = LS_WARNING,
  WARNING = LS_WARNING,
  + // LERROR [[deprecated("Use LS_ERROR")]] = LS_ERROR
  LERROR = LS_ERROR
  };
  