Add a SetDoNotFragment() method to DatagramSocket, and call this for

jingle/glue/fake_ssl_client_socket.cc

Index: jingle/glue/fake_ssl_client_socket.cc
diff --git a/jingle/glue/fake_ssl_client_socket.cc b/jingle/glue/fake_ssl_client_socket.cc
index 7270b18c1ad6de70b0db9717434990f27866c3e4..f5be222b95c9f0968550f48dfc8a97fb89981a94 100644
--- a/jingle/glue/fake_ssl_client_socket.cc
+++ b/jingle/glue/fake_ssl_client_socket.cc
@@ -114,6 +114,10 @@ int FakeSSLClientSocket::SetSendBufferSize(int32_t size) {
   return transport_socket_->SetSendBufferSize(size);
 }
 
+int FakeSSLClientSocket::SetDoNotFragment(bool do_not_fragment) {
+  return transport_socket_->SetDoNotFragment(do_not_fragment);
+}
+
 int FakeSSLClientSocket::Connect(const net::CompletionCallback& callback) {
   // We don't support synchronous operation, even if
   // |transport_socket_| does.