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

chrome/browser/renderer_preferences_util.cc

Index: chrome/browser/renderer_preferences_util.cc
diff --git a/chrome/browser/renderer_preferences_util.cc b/chrome/browser/renderer_preferences_util.cc
index 49848a180ef2e1740ef12b41f6ec56e94dec6296..68b5f45627cc9b4b56cefd9a3534dabb86c84da7 100644
--- a/chrome/browser/renderer_preferences_util.cc
+++ b/chrome/browser/renderer_preferences_util.cc
@@ -46,6 +46,10 @@ void UpdateFromSystemSettings(content::RendererPreferences* prefs,
   prefs->enable_referrers = pref_service->GetBoolean(prefs::kEnableReferrers);
   prefs->enable_do_not_track =
       pref_service->GetBoolean(prefs::kEnableDoNotTrack);
+#if defined(ENABLE_WEBRTC)
+  prefs->enable_webrtc_multiple_routes =
+      pref_service->GetBoolean(prefs::kWebRTCMultipleRoutesEnabled);
+#endif
 
   double default_zoom_level = 0;
   bool default_zoom_level_set = false;