RTCPeerConnectionInterface.mm createNativeConfiguration and other clean-up.

webrtc/sdk/objc/Framework/Classes/RTCConfiguration.mm

Index: webrtc/sdk/objc/Framework/Classes/RTCConfiguration.mm
diff --git a/webrtc/sdk/objc/Framework/Classes/RTCConfiguration.mm b/webrtc/sdk/objc/Framework/Classes/RTCConfiguration.mm
index c9730cf8c8e736625ea7dee19b98d344ea16d367..b315e5073fa3528d2d7f0c8030fd6697f39ab929 100644
--- a/webrtc/sdk/objc/Framework/Classes/RTCConfiguration.mm
+++ b/webrtc/sdk/objc/Framework/Classes/RTCConfiguration.mm
@@ -250,16 +250,6 @@
   }
 }
 
-+ (rtc::KeyType)nativeEncryptionKeyTypeForKeyType:
-    (RTCEncryptionKeyType)keyType {
-  switch (keyType) {
-    case RTCEncryptionKeyTypeRSA:
-      return rtc::KT_RSA;
-    case RTCEncryptionKeyTypeECDSA:
-      return rtc::KT_ECDSA;
-  }
-}
-
 + (RTCTcpCandidatePolicy)tcpCandidatePolicyForNativePolicy:
     (webrtc::PeerConnectionInterface::TcpCandidatePolicy)nativePolicy {
   switch (nativePolicy) {
@@ -330,4 +320,14 @@
   }
 }
 
++ (rtc::KeyType)nativeEncryptionKeyTypeForKeyType:
+    (RTCEncryptionKeyType)keyType {
+  switch (keyType) {
+    case RTCEncryptionKeyTypeRSA:
+      return rtc::KT_RSA;
+    case RTCEncryptionKeyTypeECDSA:
+      return rtc::KT_ECDSA;
+  }
+}
+
 @end