Add QUIC_EXPORT macros

net/quic/core/quic_data_writer.h

Index: net/quic/core/quic_data_writer.h
diff --git a/net/quic/core/quic_data_writer.h b/net/quic/core/quic_data_writer.h
index 6877c6b959644e5d7e0e172a142bf414c8664b6d..f33da9d78eed3038cfe050e06b55e8416b1996da 100644
--- a/net/quic/core/quic_data_writer.h
+++ b/net/quic/core/quic_data_writer.h
@@ -15,8 +15,8 @@
 #include "base/macros.h"
 #include "base/strings/string_piece.h"
 #include "net/base/int128.h"
-#include "net/base/net_export.h"
 #include "net/quic/core/quic_packets.h"
+#include "net/quic/platform/api/quic_export.h"
 
 namespace net {
 
@@ -25,7 +25,7 @@ namespace net {
 // The QuicDataWriter supports appending primitive values (int, string, etc)
 // to a frame instance.  The internal memory buffer is exposed as the "data"
 // of the QuicDataWriter.
-class NET_EXPORT_PRIVATE QuicDataWriter {
+class QUIC_EXPORT_PRIVATE QuicDataWriter {
  public:
   // Creates a QuicDataWriter where |buffer| is not owned.
   QuicDataWriter(size_t size, char* buffer);