Polishing code to handle certificate generation failure in .mm files.

webrtc/sdk/objc/Framework/Classes/RTCConfiguration+Private.h

Index: webrtc/sdk/objc/Framework/Classes/RTCConfiguration+Private.h
diff --git a/webrtc/sdk/objc/Framework/Classes/RTCConfiguration+Private.h b/webrtc/sdk/objc/Framework/Classes/RTCConfiguration+Private.h
index 4c020f9588dd92b374af5bd17b90f0d54b9e9d37..7f90b35246bd2be2ec2e61eba160c1526d67f076 100644
--- a/webrtc/sdk/objc/Framework/Classes/RTCConfiguration+Private.h
+++ b/webrtc/sdk/objc/Framework/Classes/RTCConfiguration+Private.h
@@ -16,13 +16,6 @@ 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;
-
 + (webrtc::PeerConnectionInterface::IceTransportsType)
     nativeTransportsTypeForTransportPolicy:(RTCIceTransportPolicy)policy;
 
@@ -55,6 +48,13 @@ NS_ASSUME_NONNULL_BEGIN
 
 + (NSString *)stringForTcpCandidatePolicy:(RTCTcpCandidatePolicy)policy;
 
+/**
+ * RTCConfiguration struct representation of this RTCConfiguration. This is
+ * needed to pass to the underlying C++ APIs.
+ */
+- (webrtc::PeerConnectionInterface::RTCConfiguration *)
+    createNativeConfiguration;
+
 @end
 
 NS_ASSUME_NONNULL_END