Make ECDSA default for RTCPeerConnection

webrtc/api/objc/RTCConfiguration+Private.h

 /*
  *  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.
  */
 
 #import "RTCConfiguration.h"
 
 #include "talk/app/webrtc/peerconnectioninterface.h"
 
 NS_ASSUME_NONNULL_BEGIN
 
 @interface RTCConfiguration ()
 
 /**
  * RTCConfiguration struct representation of this RTCConfiguration. This is
  * needed to pass to the underlying C++ APIs.
  */
 @property(nonatomic, readonly)
     webrtc::PeerConnectionInterface::RTCConfiguration nativeConfiguration;
 
-- (instancetype)initWithNativeConfiguration:
-    (webrtc::PeerConnectionInterface::RTCConfiguration)nativeConfiguration;
-
 + (webrtc::PeerConnectionInterface::IceTransportsType)
     nativeTransportsTypeForTransportPolicy:(RTCIceTransportPolicy)policy;
 
 + (RTCIceTransportPolicy)transportPolicyForTransportsType:
     (webrtc::PeerConnectionInterface::IceTransportsType)nativeType;
 
 + (NSString *)stringForTransportPolicy:(RTCIceTransportPolicy)policy;
 
 + (webrtc::PeerConnectionInterface::BundlePolicy)nativeBundlePolicyForPolicy:
     (RTCBundlePolicy)policy;
@@ skipping 15 matching lines @@
     nativeTcpCandidatePolicyForPolicy:(RTCTcpCandidatePolicy)policy;
 
 + (RTCTcpCandidatePolicy)tcpCandidatePolicyForNativePolicy:
     (webrtc::PeerConnectionInterface::TcpCandidatePolicy)nativePolicy;
 
 + (NSString *)stringForTcpCandidatePolicy:(RTCTcpCandidatePolicy)policy;
 
 @end
 
 NS_ASSUME_NONNULL_END