Explicitly whitelist the test server port.

chrome/test/live_sync/live_sync_test.h

Index: chrome/test/live_sync/live_sync_test.h
diff --git a/chrome/test/live_sync/live_sync_test.h b/chrome/test/live_sync/live_sync_test.h
index 1759d938b32aba585f4b813ab8928627394d56ab..e1621f84d85445b283fb966ce5078a26ec461714 100644
--- a/chrome/test/live_sync/live_sync_test.h
+++ b/chrome/test/live_sync/live_sync_test.h
@@ -174,6 +174,9 @@ class LiveSyncTest : public InProcessBrowserTest {
   // Test server of type sync, started on demand.
   net::TestServer sync_server_;
 
+  // Helper class to whitelist the notification port.
+  scoped_ptr<net::ScopedPortException> xmpp_port_;
+
   // Used to differentiate between single-client, two-client, multi-client and
   // many-client tests.
   TestType test_type_;