Remove use of selectors matching Apple private API names.

webrtc/modules/audio_device/ios/objc/RTCAudioSession.h

Index: webrtc/modules/audio_device/ios/objc/RTCAudioSession.h
diff --git a/webrtc/modules/audio_device/ios/objc/RTCAudioSession.h b/webrtc/modules/audio_device/ios/objc/RTCAudioSession.h
index ef5cec46002d2bde8ab9d178278800e0666f98af..199fd17b285684d8b4e8cb5ed732249d32f7e2fb 100644
--- a/webrtc/modules/audio_device/ios/objc/RTCAudioSession.h
+++ b/webrtc/modules/audio_device/ios/objc/RTCAudioSession.h
@@ -52,12 +52,12 @@ RTC_EXPORT
 /** Called on a system notification thread when AVAudioSession media server
  *  terminates.
  */
-- (void)audioSessionMediaServicesWereLost:(RTCAudioSession *)session;
+- (void)audioSessionMediaServerTerminated:(RTCAudioSession *)session;
 
 /** Called on a system notification thread when AVAudioSession media server
  *  restarts.
  */
-- (void)audioSessionMediaServicesWereReset:(RTCAudioSession *)session;
+- (void)audioSessionMediaServerReset:(RTCAudioSession *)session;
 
 // TODO(tkchin): Maybe handle SilenceSecondaryAudioHintNotification.