QUIC - refactor stream creation. Guarded by --quic_reloadable_flag_quic_refactor_stream_creation.

net/tools/quic/end_to_end_test.cc

Index: net/tools/quic/end_to_end_test.cc
diff --git a/net/tools/quic/end_to_end_test.cc b/net/tools/quic/end_to_end_test.cc
index 3d15fb81bc74c5952497e931b3fa3f526a148c2c..46e1ee910f9a426114582279f150de05ee4a9eb6 100644
--- a/net/tools/quic/end_to_end_test.cc
+++ b/net/tools/quic/end_to_end_test.cc
@@ -2427,6 +2427,9 @@ class ClientSessionThatDropsBody : public QuicClientSession {
     return QuicMakeUnique<ClientStreamThatDropsBody>(GetNextOutgoingStreamId(),
                                                      this);
   }
+  std::unique_ptr<QuicStream> CreateStream(QuicStreamId id) override {
+    return QuicMakeUnique<ClientStreamThatDropsBody>(id, this);
+  }
 };
 
 class MockableQuicClientThatDropsBody : public MockableQuicClient {