Replace quic_macros.h with Abseil equivalents.

NOKEYCHECK

NOKEYCHECK=True
PiperOrigin-RevId: 339148534
Change-Id: I75a7122584638e1f30f4c650833a497b1b33df15
diff --git a/quic/test_tools/packet_dropping_test_writer.h b/quic/test_tools/packet_dropping_test_writer.h
index 47a3216..02eebe9 100644
--- a/quic/test_tools/packet_dropping_test_writer.h
+++ b/quic/test_tools/packet_dropping_test_writer.h
@@ -9,10 +9,10 @@
 #include <list>
 #include <memory>
 
+#include "absl/base/attributes.h"
 #include "net/third_party/quiche/src/quic/core/quic_alarm.h"
 #include "net/third_party/quiche/src/quic/core/quic_clock.h"
 #include "net/third_party/quiche/src/quic/core/quic_packet_writer_wrapper.h"
-#include "net/third_party/quiche/src/quic/platform/api/quic_macros.h"
 #include "net/third_party/quiche/src/quic/test_tools/quic_test_client.h"
 #include "net/third_party/quiche/src/quic/test_tools/quic_test_utils.h"
 
@@ -126,7 +126,9 @@
   }
 
   // Useful for reproducing very flaky issues.
-  QUIC_UNUSED void set_seed(uint64_t seed) { simple_random_.set_seed(seed); }
+  ABSL_ATTRIBUTE_UNUSED void set_seed(uint64_t seed) {
+    simple_random_.set_seed(seed);
+  }
 
  private:
   // Writes out the next packet to the contained writer and returns the time