Add QUIC_EXPORT macros

net/quic/core/crypto/key_exchange.h

Index: net/quic/core/crypto/key_exchange.h
diff --git a/net/quic/core/crypto/key_exchange.h b/net/quic/core/crypto/key_exchange.h
index dc3c60f5587fd2d89a1b5e1dfd754043c56bcb5e..69da86e92fd0ea37caafc2d36b72d31606d67fd7 100644
--- a/net/quic/core/crypto/key_exchange.h
+++ b/net/quic/core/crypto/key_exchange.h
@@ -8,8 +8,8 @@
 #include <string>
 
 #include "base/strings/string_piece.h"
-#include "net/base/net_export.h"
 #include "net/quic/core/crypto/crypto_protocol.h"
+#include "net/quic/platform/api/quic_export.h"
 
 namespace net {
 
@@ -17,7 +17,7 @@ class QuicRandom;
 
 // KeyExchange is an abstract class that provides an interface to a
 // key-exchange primitive.
-class NET_EXPORT_PRIVATE KeyExchange {
+class QUIC_EXPORT_PRIVATE KeyExchange {
  public:
   virtual ~KeyExchange() {}