Add missing QUICHE_EXPORT annotations

PiperOrigin-RevId: 563526633

quiche/common/quiche_ip_address_family.h

diff --git a/quiche/common/quiche_ip_address_family.h b/quiche/common/quiche_ip_address_family.h
index 1fbec53..103860a 100644
--- a/quiche/common/quiche_ip_address_family.h
+++ b/quiche/common/quiche_ip_address_family.h
@@ -5,6 +5,8 @@
 #ifndef QUICHE_COMMON_QUICHE_IP_ADDRESS_FAMILY_H_
 #define QUICHE_COMMON_QUICHE_IP_ADDRESS_FAMILY_H_
 
+#include "quiche/common/platform/api/quiche_export.h"
+
 namespace quiche {
 
 // IP address family type used in QUIC. This hides platform dependant IP address
@@ -15,8 +17,8 @@
   IP_UNSPEC,
 };
 
-int ToPlatformAddressFamily(IpAddressFamily family);
-IpAddressFamily FromPlatformAddressFamily(int family);
+QUICHE_EXPORT int ToPlatformAddressFamily(IpAddressFamily family);
+QUICHE_EXPORT IpAddressFamily FromPlatformAddressFamily(int family);
 
 }  // namespace quiche