Remove RTCIceTransportPolicy "none".

third_party/WebKit/Source/modules/peerconnection/RTCPeerConnection.cpp

Index: third_party/WebKit/Source/modules/peerconnection/RTCPeerConnection.cpp
diff --git a/third_party/WebKit/Source/modules/peerconnection/RTCPeerConnection.cpp b/third_party/WebKit/Source/modules/peerconnection/RTCPeerConnection.cpp
index dd5215070c892e992442c229ae8a5929a953ff96..5e32e3436a5b2d256176dc9d9ab4a51230d45c4c 100644
--- a/third_party/WebKit/Source/modules/peerconnection/RTCPeerConnection.cpp
+++ b/third_party/WebKit/Source/modules/peerconnection/RTCPeerConnection.cpp
@@ -223,8 +223,6 @@ class WebRTCCertificateObserver : public WebRTCCertificateCallback {
 };
 
 WebRTCIceTransportPolicy IceTransportPolicyFromString(const String& policy) {
-  if (policy == "none")
-    return WebRTCIceTransportPolicy::kNone;
   if (policy == "relay")
     return WebRTCIceTransportPolicy::kRelay;
   DCHECK_EQ(policy, "all");
@@ -242,17 +240,10 @@ WebRTCConfiguration ParseConfiguration(ExecutionContext* context,
     UseCounter::Count(context, UseCounter::kRTCConfigurationIceTransportPolicy);
     ice_transport_policy =
         IceTransportPolicyFromString(configuration.iceTransportPolicy());
-    if (ice_transport_policy == WebRTCIceTransportPolicy::kNone) {
-      UseCounter::Count(context,
-                        UseCounter::kRTCConfigurationIceTransportPolicyNone);
-    }
   } else if (configuration.hasIceTransports()) {
     UseCounter::Count(context, UseCounter::kRTCConfigurationIceTransports);
     ice_transport_policy =
         IceTransportPolicyFromString(configuration.iceTransports());
-    if (ice_transport_policy == WebRTCIceTransportPolicy::kNone)
-      UseCounter::Count(context,
-                        UseCounter::kRTCConfigurationIceTransportsNone);
   }
 
   WebRTCBundlePolicy bundle_policy = WebRTCBundlePolicy::kBalanced;