Add a Preference to allow WebRTC only bind to "any address" (all 0s)

content/renderer/media/webrtc/peer_connection_dependency_factory.h

Index: content/renderer/media/webrtc/peer_connection_dependency_factory.h
diff --git a/content/renderer/media/webrtc/peer_connection_dependency_factory.h b/content/renderer/media/webrtc/peer_connection_dependency_factory.h
index 8a9abe3285e4998aec2d736d04f94718d469cfd2..b4bdb07e2724586a490aaec665bff738734e5ce6 100644
--- a/content/renderer/media/webrtc/peer_connection_dependency_factory.h
+++ b/content/renderer/media/webrtc/peer_connection_dependency_factory.h
@@ -127,6 +127,10 @@ class CONTENT_EXPORT PeerConnectionDependencyFactory
   scoped_refptr<base::MessageLoopProxy> GetWebRtcWorkerThread() const;
   scoped_refptr<base::MessageLoopProxy> GetWebRtcSignalingThread() const;
 
+  void set_disable_multiple_routes(bool disable_multiple_routes) {
+    disable_multiple_routes_ = disable_multiple_routes;
+  }
+
  protected:
   // Asks the PeerConnection factory to create a Local Audio Source.
   virtual scoped_refptr<webrtc::AudioSourceInterface>
@@ -204,6 +208,8 @@ class CONTENT_EXPORT PeerConnectionDependencyFactory
   base::Thread chrome_signaling_thread_;
   base::Thread chrome_worker_thread_;
 
+  bool disable_multiple_routes_;
+
   DISALLOW_COPY_AND_ASSIGN(PeerConnectionDependencyFactory);
 };