Disable flaky test.

Bug: 1122155
Change-Id: I6653288c9d4d175d8f2e077c67470464f4194829
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2458807
Commit-Queue: Jamie Walch <jamiewalch@chromium.org>
Reviewed-by: Joe Downing <joedow@google.com>
Cr-Commit-Position: refs/heads/master@{#815216}

remoting/host/it2me/it2me_host_unittest.cc

@@ -445,7 +445,9 @@ TEST_F(It2MeHostTest, NatTraversalPolicy_Disabled) {
   ASSERT_EQ(It2MeHostState::kDisconnected, last_host_state_);
 }
 
-TEST_F(It2MeHostTest, NatTraversalPolicy_DisabledTransitionCausesDisconnect) {
+// TODO(crbug/1122155): flaky test.
+TEST_F(It2MeHostTest,
+       DISABLED_NatTraversalPolicy_DisabledTransitionCausesDisconnect) {
   StartHost();
   ASSERT_EQ(It2MeHostState::kReceivedAccessCode, last_host_state_);