Move tests from portable_quic to the new quic/quartc wrapper location.

net/quic/quartc/quartc_session.h

Index: net/quic/quartc/quartc_session.h
diff --git a/net/quic/quartc/quartc_session.h b/net/quic/quartc/quartc_session.h
index 98a365003dcb75a400b8277abce11bf2edf57848..33dec27d124594b4e594f0a68000301ab92e819d 100644
--- a/net/quic/quartc/quartc_session.h
+++ b/net/quic/quartc/quartc_session.h
@@ -94,7 +94,11 @@ class QuartcSession : public QuicSession,
   QuicStream* CreateIncomingDynamicStream(QuicStreamId id) override;
   std::unique_ptr<QuicStream> CreateStream(QuicStreamId id) override;
 
-  QuartcStream* CreateDataStream(QuicStreamId id, SpdyPriority priority);
+  std::unique_ptr<QuartcStream> CreateDataStream(QuicStreamId id,
+                                                 SpdyPriority priority);
+  // Activates a QuartcStream.  The session takes ownership of the stream, but
+  // returns an unowned pointer to the stream for convenience.
+  QuartcStream* ActivateDataStream(std::unique_ptr<QuartcStream> stream);
 
  private:
   // For crypto handshake.