Implement new PeerConnection certificate policy API in ObjC API

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

Index: webrtc/sdk/objc/Framework/Headers/WebRTC/RTCIceServer.h
diff --git a/webrtc/sdk/objc/Framework/Headers/WebRTC/RTCIceServer.h b/webrtc/sdk/objc/Framework/Headers/WebRTC/RTCIceServer.h
index ff5489cb41297ec2652e1a3bdcb1367429a951a8..d4c07b4fb0561a76b9ce4eaa3d97619382db5f12 100644
--- a/webrtc/sdk/objc/Framework/Headers/WebRTC/RTCIceServer.h
+++ b/webrtc/sdk/objc/Framework/Headers/WebRTC/RTCIceServer.h
@@ -12,6 +12,11 @@
 
 #import <WebRTC/RTCMacros.h>
 
+typedef NS_ENUM(NSUInteger, RTCTlsCertPolicy) {
+  RTCTlsCertPolicySecure,
+  RTCTlsCertPolicyInsecureNoCheck
+};
+
 NS_ASSUME_NONNULL_BEGIN
 
 RTC_EXPORT
@@ -26,6 +31,10 @@ RTC_EXPORT
 /** Credential to use if this RTCIceServer object is a TURN server. */
 @property(nonatomic, readonly, nullable) NSString *credential;
 
+/** TLS certificate policy to use if this RTCIceServer object is a TURN server.

[daniela-webrtc, 2017/02/01 14:26:53]

Move this to the next line to formulate the comment like so
/**
 * TLS certificate policy to use...
 */

[hnsl1, 2017/02/01 16:11:47]

Done.

+ */
+@property(nonatomic, readonly) RTCTlsCertPolicy tlsCertPolicy;
+
 - (nonnull instancetype)init NS_UNAVAILABLE;
 
 /** Convenience initializer for a server with no authentication (e.g. STUN). */
@@ -35,9 +44,18 @@ RTC_EXPORT
  * Initialize an RTCIceServer with its associated URLs, optional username,
  * optional credential, and credentialType.
  */
-- (instancetype)initWithURLStrings:(NSArray<NSString *> *)urlStrings
-                          username:(nullable NSString *)username
-                        credential:(nullable NSString *)credential
+- (instancetype)initWithURLStrings:(NSArray<NSString*>*)urlStrings
+                          username:(nullable NSString*)username
+                        credential:(nullable NSString*)credential;
+
+/**
+ * Initialize an RTCIceServer with its associated URLs, optional username,
+ * optional credential, and TLS cert policy.
+ */
+- (instancetype)initWithURLStrings:(NSArray<NSString*>*)urlStrings
+                          username:(nullable NSString*)username
+                        credential:(nullable NSString*)credential
+                     tlsCertPolicy:(RTCTlsCertPolicy)tlsCertPolicy
     NS_DESIGNATED_INITIALIZER;
 
 @end