Remove use of selectors matching Apple private API names.

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

 /*
  *  Copyright 2016 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 792 matching lines @@
     if ([delegate respondsToSelector:sel]) {
       [delegate audioSessionDidChangeRoute:self
                                     reason:reason
                              previousRoute:previousRoute];
     }
   }
 }
 
 - (void)notifyMediaServicesWereLost {
   for (auto delegate : self.delegates) {
-    SEL sel = @selector(audioSessionMediaServicesWereLost:);
+    SEL sel = @selector(audioSessionMediaServerTerminated:);
     if ([delegate respondsToSelector:sel]) {
-      [delegate audioSessionMediaServicesWereLost:self];
+      [delegate audioSessionMediaServerTerminated:self];
     }
   }
 }
 
 - (void)notifyMediaServicesWereReset {
   for (auto delegate : self.delegates) {
-    SEL sel = @selector(audioSessionMediaServicesWereReset:);
+    SEL sel = @selector(audioSessionMediaServerReset:);
     if ([delegate respondsToSelector:sel]) {
-      [delegate audioSessionMediaServicesWereReset:self];
+      [delegate audioSessionMediaServerReset:self];
     }
   }
 }
 
 - (void)notifyDidChangeCanPlayOrRecord:(BOOL)canPlayOrRecord {
   for (auto delegate : self.delegates) {
     SEL sel = @selector(audioSession:didChangeCanPlayOrRecord:);
     if ([delegate respondsToSelector:sel]) {
       [delegate audioSession:self didChangeCanPlayOrRecord:canPlayOrRecord];
     }
@@ skipping 12 matching lines @@
 - (void)notifyDidStopPlayOrRecord {
   for (auto delegate : self.delegates) {
     SEL sel = @selector(audioSessionDidStopPlayOrRecord:);
     if ([delegate respondsToSelector:sel]) {
       [delegate audioSessionDidStopPlayOrRecord:self];
     }
   }
 }
 
 @end