Create a new preference which disables UDP protocol for WebRTC

content/public/common/renderer_preferences.h

Index: content/public/common/renderer_preferences.h
diff --git a/content/public/common/renderer_preferences.h b/content/public/common/renderer_preferences.h
index 0868d89283c0b1260780206a8990fe027592c562..4cb2f31e60ce09585d652013f1ab24d1832ec6f8 100644
--- a/content/public/common/renderer_preferences.h
+++ b/content/public/common/renderer_preferences.h
@@ -99,6 +99,11 @@ struct CONTENT_EXPORT RendererPreferences {
   // Set to false to indicate that WebRTC should use the OS default routing.
   bool enable_webrtc_multiple_routes;
 
+  // Set to true to indicate that WebRTC is allowed to use UDP to connect to
+  // peer
+  // or TURN servers. Default is true.

[pthatcher2, 2015/08/25 23:12:34]

Weird formatting

[guoweis_left_chromium, 2015/08/26 14:43:40]

Done.

+  bool enable_webrtc_udp_transport;
+
   // Default page zoom level.
   double default_zoom_level;