Add QUIC_EXPORT macros

net/quic/core/spdy_utils.h

Index: net/quic/core/spdy_utils.h
diff --git a/net/quic/core/spdy_utils.h b/net/quic/core/spdy_utils.h
index 1da25228080f42e535ae1a35e8d4391d32f1a08a..ce24c1be3c83bbdeb90e621c09896348856d6847 100644
--- a/net/quic/core/spdy_utils.h
+++ b/net/quic/core/spdy_utils.h
@@ -12,14 +12,14 @@
 #include <string>
 
 #include "base/macros.h"
-#include "net/base/net_export.h"
 #include "net/quic/core/quic_header_list.h"
 #include "net/quic/core/quic_packets.h"
+#include "net/quic/platform/api/quic_export.h"
 #include "net/spdy/spdy_framer.h"
 
 namespace net {
 
-class NET_EXPORT_PRIVATE SpdyUtils {
+class QUIC_EXPORT_PRIVATE SpdyUtils {
  public:
   static std::string SerializeUncompressedHeaders(
       const SpdyHeaderBlock& headers);