Revert of Remove obsolete QUIC disabling code.

net/quic/test_tools/quic_stream_factory_peer.h

Index: net/quic/test_tools/quic_stream_factory_peer.h
diff --git a/net/quic/test_tools/quic_stream_factory_peer.h b/net/quic/test_tools/quic_stream_factory_peer.h
index 0c314778fdd1ab80b46b406a1d8f7544937ef731..ac0283a5d6c67d72b8b071ed2e80e7b047b66d51 100644
--- a/net/quic/test_tools/quic_stream_factory_peer.h
+++ b/net/quic/test_tools/quic_stream_factory_peer.h
@@ -54,9 +54,12 @@
   static void SetTaskRunner(QuicStreamFactory* factory,
                             base::TaskRunner* task_runner);
 
+  static int GetNumberOfLossyConnections(QuicStreamFactory* factory,
+                                         uint16_t port);
+
   static QuicTime::Delta GetPingTimeout(QuicStreamFactory* factory);
 
-  static bool IsQuicDisabled(QuicStreamFactory* factory);
+  static bool IsQuicDisabled(QuicStreamFactory* factory, uint16_t port);
 
   static bool GetDelayTcpRace(QuicStreamFactory* factory);
 
@@ -80,6 +83,10 @@
 
   static size_t GetNumberOfActiveJobs(QuicStreamFactory* factory,
                                       const QuicServerId& server_id);
+
+  static int GetNumTimeoutsWithOpenStreams(QuicStreamFactory* factory);
+
+  static int GetNumPublicResetsPostHandshake(QuicStreamFactory* factory);
 
   static void MaybeInitialize(QuicStreamFactory* factory);