Don't collect a log per peerconnection if webrtc-internals isn't open.

content/browser/webrtc/webrtc_internals.h

Index: content/browser/webrtc/webrtc_internals.h
diff --git a/content/browser/webrtc/webrtc_internals.h b/content/browser/webrtc/webrtc_internals.h
index c20a5fb14029cf4a95fe296429087895b053e32f..f2cde8a78c3badfe833d447c87fa7e033809cabf 100644
--- a/content/browser/webrtc/webrtc_internals.h
+++ b/content/browser/webrtc/webrtc_internals.h
@@ -175,6 +175,10 @@ class CONTENT_EXPORT WebRTCInternals : public RenderProcessHostObserver,
   // notifications.
   void ProcessPendingUpdates();
 
+  base::DictionaryValue* FindRecord(base::ProcessId pid,
+                                    int lid,
+                                    size_t* index = nullptr);
+
   base::ObserverList<WebRTCInternalsUIObserver> observers_;
 
   // |peer_connection_data_| is a list containing all the PeerConnection