Revert "Reland "Remove GICE (gone forever!) and PORTALLOCATOR_ENABLE_SHARED_UFRAG (enabled forever)…

talk/app/webrtc/peerconnection.cc

Index: talk/app/webrtc/peerconnection.cc
diff --git a/talk/app/webrtc/peerconnection.cc b/talk/app/webrtc/peerconnection.cc
index ef5836bbdd4a7dac84d33ae484bd8f3c43544486..a53e2cb510ef9806299f6314617ff8ccc0d41d82 100644
--- a/talk/app/webrtc/peerconnection.cc
+++ b/talk/app/webrtc/peerconnection.cc
@@ -367,7 +367,8 @@ bool PeerConnection::Initialize(
   // To handle both internal and externally created port allocator, we will
   // enable BUNDLE here.
   int portallocator_flags = port_allocator_->flags();
-  portallocator_flags |= cricket::PORTALLOCATOR_ENABLE_SHARED_SOCKET |
+  portallocator_flags |= cricket::PORTALLOCATOR_ENABLE_SHARED_UFRAG |
+                         cricket::PORTALLOCATOR_ENABLE_SHARED_SOCKET |
                          cricket::PORTALLOCATOR_ENABLE_IPV6;
   bool value;
   // If IPv6 flag was specified, we'll not override it by experiment.