Add RTCPeerConnection RAPPOR metrics.

third_party/WebKit/Source/core/frame/HostsUsingFeatures.cpp

Index: third_party/WebKit/Source/core/frame/HostsUsingFeatures.cpp
diff --git a/third_party/WebKit/Source/core/frame/HostsUsingFeatures.cpp b/third_party/WebKit/Source/core/frame/HostsUsingFeatures.cpp
index 975e84283c6b3c5c4f7bb8b6f633e4566e26a67e..4a18f8c9a64507634765910427ee94dd34ef3737 100644
--- a/third_party/WebKit/Source/core/frame/HostsUsingFeatures.cpp
+++ b/third_party/WebKit/Source/core/frame/HostsUsingFeatures.cpp
@@ -192,6 +192,12 @@ void HostsUsingFeatures::Value::recordETLDPlus1ToRappor(const KURL& url)
         Platform::current()->recordRapporURL("PowerfulFeatureUse.ETLDPlus1.GetUserMedia.Insecure", WebURL(url));
     if (get(Feature::GetUserMediaSecureHost))
         Platform::current()->recordRapporURL("PowerfulFeatureUse.ETLDPlus1.GetUserMedia.Secure", WebURL(url));
+    if (get(Feature::RTCPeerConnectionCreated))
+        Platform::current()->recordRapporURL("RTCPeerConnection.Attempted", WebURL(url));
+    if (get(Feature::RTCPeerConnectionStable))
+        Platform::current()->recordRapporURL("RTCPeerConnection.Stable", WebURL(url));
+    if (get(Feature::RTCPeerConnectionConnected))
+        Platform::current()->recordRapporURL("RTCPeerConnection.Connected", WebURL(url));
 }
 
 } // namespace blink