message: Explicitly wait for ICE to complete in VerifyBestConnection
  Cr-Commit-Position: refs/heads/master@{#30290}
diff: @@ -4591,6 +4591,10 @@ TEST_P(PeerConnectionIntegrationIceStatesTest, VerifyBestConnection) {
  caller()->CreateAndSetAndSignalOffer();
  ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
  + EXPECT_EQ_WAIT(webrtc::PeerConnectionInterface::kIceConnectionCompleted,
  + caller()->ice_connection_state(), kDefaultTimeout);
  + EXPECT_EQ_WAIT(webrtc::PeerConnectionInterface::kIceConnectionConnected,
  + callee()->ice_connection_state(), kDefaultTimeout);
  // TODO(bugs.webrtc.org/9456): Fix it.
  const int num_best_ipv4 = webrtc::metrics::NumEvents(
  