Pass around the candidate removals events in IOS clients

webrtc/sdk/objc/Framework/Headers/WebRTC/RTCPeerConnection.h

Index: webrtc/sdk/objc/Framework/Headers/WebRTC/RTCPeerConnection.h
diff --git a/webrtc/sdk/objc/Framework/Headers/WebRTC/RTCPeerConnection.h b/webrtc/sdk/objc/Framework/Headers/WebRTC/RTCPeerConnection.h
index 0db84ac2f965d1769e4b9aa8981f87392242ef3e..e27ae20fe6c9b65c25104c44182183fcd438e7da 100644
--- a/webrtc/sdk/objc/Framework/Headers/WebRTC/RTCPeerConnection.h
+++ b/webrtc/sdk/objc/Framework/Headers/WebRTC/RTCPeerConnection.h
@@ -97,6 +97,10 @@ RTC_EXPORT
 - (void)peerConnection:(RTCPeerConnection *)peerConnection
     didGenerateIceCandidate:(RTCIceCandidate *)candidate;
 
+/** Called when a group of local Ice candidates have been removed. */
+- (void)peerConnection:(RTCPeerConnection *)peerConnection
+    didRemoveIceCandidates:(NSArray<RTCIceCandidate *> *)candidates;
+
 /** New data channel has been opened. */
 - (void)peerConnection:(RTCPeerConnection *)peerConnection
     didOpenDataChannel:(RTCDataChannel *)dataChannel;
@@ -141,6 +145,9 @@ RTC_EXPORT
 /** Provide a remote candidate to the ICE Agent. */
 - (void)addIceCandidate:(RTCIceCandidate *)candidate;
 
+/** Remove a group of remote candidates from the ICE Agent. */
+- (void)removeRemoteIceCandidates:(NSArray<RTCIceCandidate *> *)candidates;
+
 /** Add a new media stream to be sent on this peer connection. */
 - (void)addStream:(RTCMediaStream *)stream;