snapshot some pending dart work

PiperOrigin-RevId: 493073994

upb/message/accessors.h

@@ -65,8 +65,8 @@ UPB_INLINE void _upb_MiniTable_SetPresence(upb_Message* msg,
   }
 }
 
-UPB_INLINE bool upb_MiniTable_HasField(const upb_Message* msg,
-                                       const upb_MiniTableField* field);
+UPB_API_INLINE bool upb_MiniTable_HasField(const upb_Message* msg,
+                                           const upb_MiniTableField* field);
 
 UPB_INLINE bool _upb_MiniTable_ValueIsNonZero(const void* default_val,
                                               const upb_MiniTableField* field) {

upb/message/message.h

@@ -45,7 +45,8 @@ extern "C" {
 #endif
 
 // Creates a new message with the given mini_table on the given arena.
-upb_Message* upb_Message_New(const upb_MiniTable* mini_table, upb_Arena* arena);
+UPB_API upb_Message* upb_Message_New(const upb_MiniTable* mini_table,
+                                     upb_Arena* arena);
 
 // Adds unknown data (serialized protobuf data) to the given message.
 // The data is copied into the message instance.