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 2ba8661d13a6023f67e4ced22fe21f5a14524459..922ccfa0ee3743dd43c4dffc520aa03cd113016f 100644
--- a/webrtc/sdk/objc/Framework/Headers/WebRTC/RTCPeerConnection.h
+++ b/webrtc/sdk/objc/Framework/Headers/WebRTC/RTCPeerConnection.h
@@ -98,6 +98,10 @@ 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;
@@ -148,6 +152,9 @@ 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)removeIceCandidates:(NSArray<RTCIceCandidate *> *)candidates;
+
 /** Add a new media stream to be sent on this peer connection. */
 - (void)addStream:(RTCMediaStream *)stream;