Revert of Adding PeerConnectionInterface::SetConfiguration method.

talk/app/webrtc/objc/RTCPeerConnection.mm

 /*
  * libjingle
  * Copyright 2013 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 190 matching lines @@
 
 - (void)setRemoteDescriptionWithDelegate:
             (id<RTCSessionDescriptionDelegate>)delegate
                       sessionDescription:(RTCSessionDescription*)sdp {
   rtc::scoped_refptr<webrtc::RTCSetSessionDescriptionObserver> observer(
       new rtc::RefCountedObject<webrtc::RTCSetSessionDescriptionObserver>(
           delegate, self));
   self.peerConnection->SetRemoteDescription(observer, sdp.sessionDescription);
 }
 
-- (BOOL)setConfiguration:(RTCConfiguration *)configuration {
-  return self.peerConnection->SetConfiguration(
-      configuration.nativeConfiguration);
+- (BOOL)updateICEServers:(NSArray*)servers
+             constraints:(RTCMediaConstraints*)constraints {
+  webrtc::PeerConnectionInterface::IceServers iceServers;
+  for (RTCICEServer* server in servers) {
+    iceServers.push_back(server.iceServer);
+  }
+  return self.peerConnection->UpdateIce(iceServers, constraints.constraints);
 }
 
 - (RTCSessionDescription*)localDescription {
   const webrtc::SessionDescriptionInterface* sdi =
       self.peerConnection->local_description();
   return sdi ? [[RTCSessionDescription alloc] initWithSessionDescription:sdi]
              : nil;
 }
 
 - (NSArray*)localStreams {
@@ skipping 70 matching lines @@
     _delegate = delegate;
   }
   return self;
 }
 
 - (rtc::scoped_refptr<webrtc::PeerConnectionInterface>)peerConnection {
   return _peerConnection;
 }
 
 @end