Wrap EXPECT_DEBUG_DEATH in the appropriate guard to make it compile
on iOS in Chromium.

gfe-relnote: n/a - Test only
PiperOrigin-RevId: 280454390
Change-Id: I9a00dc9048db902350b2549ade19c110f76d2904

quic/core/quic_stream_send_buffer_test.cc

diff --git a/quic/core/quic_stream_send_buffer_test.cc b/quic/core/quic_stream_send_buffer_test.cc
index a6a7ad2..477566a 100644
--- a/quic/core/quic_stream_send_buffer_test.cc
+++ b/quic/core/quic_stream_send_buffer_test.cc
@@ -137,8 +137,10 @@
   // Write new data.
   if (!GetQuicRestartFlag(quic_coalesce_stream_frames_2)) {
     EXPECT_EQ(1, QuicStreamSendBufferPeer::write_index(&send_buffer_));
+#if GTEST_HAS_DEATH_TEST && !defined(NDEBUG)
     EXPECT_DEBUG_DEATH(send_buffer_.WriteStreamData(2048, 50, &writer),
                        "Tried to write data out of sequence.");
+#endif
   } else {
     EXPECT_EQ(2, QuicStreamSendBufferPeer::write_index(&send_buffer_));
     ASSERT_TRUE(send_buffer_.WriteStreamData(2048, 50, &writer));