Add pruneTurnPorts to the IOS RTCConfiguration.

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

Index: webrtc/sdk/objc/Framework/Headers/WebRTC/RTCConfiguration.h
diff --git a/webrtc/sdk/objc/Framework/Headers/WebRTC/RTCConfiguration.h b/webrtc/sdk/objc/Framework/Headers/WebRTC/RTCConfiguration.h
index 04cf9fc15e71665ca0697fd125b8b3a815498e69..fcd2244cb1802cdf51332897f07849c9e5e37219 100644
--- a/webrtc/sdk/objc/Framework/Headers/WebRTC/RTCConfiguration.h
+++ b/webrtc/sdk/objc/Framework/Headers/WebRTC/RTCConfiguration.h
@@ -93,6 +93,9 @@ RTC_EXPORT
 /** ICE candidate pool size as defined in JSEP. Default is 0. */
 @property(nonatomic, assign) int iceCandidatePoolSize;
 
+/** Prune turn ports on the same network to the same turn server. Default is false. */
+@property(nonatomic, assign) bool pruneTurnPorts;

[tkchin_webrtc, 2016/07/08 21:09:04]

BOOL shouldPruneTurnPorts

Default is NO.

[honghaiz3, 2016/07/21 03:30:01]

Fixed in a separate CL.

+
 /** If set to true, this means the ICE transport should presume TURN-to-TURN
  *  candidate pairs will succeed, even before a binding response is received.
  */