Minor ObjC API tweaks.

webrtc/api/objc/RTCPeerConnection.mm

 /*
  *  Copyright 2015 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 230 matching lines @@
 - (RTCIceConnectionState)iceConnectionState {
   return [[self class] iceConnectionStateForNativeState:
       _peerConnection->ice_connection_state()];
 }
 
 - (RTCIceGatheringState)iceGatheringState {
   return [[self class] iceGatheringStateForNativeState:
       _peerConnection->ice_gathering_state()];
 }
 
+- (BOOL)setConfiguration:(RTCConfiguration *)configuration {
+  return _peerConnection->SetConfiguration(configuration.nativeConfiguration);
+}
+
 - (void)close {
   _peerConnection->Close();
 }
 
 - (void)addIceCandidate:(RTCIceCandidate *)candidate {
   rtc::scoped_ptr<const webrtc::IceCandidateInterface> iceCandidate(
       candidate.nativeCandidate);
   _peerConnection->AddIceCandidate(iceCandidate.get());
 }
 
@@ skipping 209 matching lines @@
     case RTCStatsOutputLevelDebug:
       return webrtc::PeerConnectionInterface::kStatsOutputLevelDebug;
   }
 }
 
 - (rtc::scoped_refptr<webrtc::PeerConnectionInterface>)nativePeerConnection {
   return _peerConnection;
 }
 
 @end