Restrict QUIC session pool when channel ID is present.

net/quic/test_tools/quic_client_session_peer.cc

Index: net/quic/test_tools/quic_client_session_peer.cc
diff --git a/net/quic/test_tools/quic_client_session_peer.cc b/net/quic/test_tools/quic_client_session_peer.cc
index e88da49e15ec767ed820fb47038663e4d507e6ca..bf6c6c597da10f846ea0e91349a09a2fcc884818 100644
--- a/net/quic/test_tools/quic_client_session_peer.cc
+++ b/net/quic/test_tools/quic_client_session_peer.cc
@@ -17,5 +17,11 @@ void QuicClientSessionPeer::SetMaxOpenStreams(QuicClientSession* session,
                                                     default_streams);
 }
 
+// static
+void QuicClientSessionPeer::SetChannelIDKey(QuicClientSession* session,
+                                            ChannelIDKey* channel_id_key) {
+  session->crypto_stream_->channel_id_key_.reset(channel_id_key);
+}
+
 }  // namespace test
 }  // namespace net