Make OneofDef stop deriving from Def.

It is clear now that oneofs are different form other
defs in one important way: they are not top-level
constructs that can stand on their own in a SymbolTable,
for example.  If you are iterating over a list of Defs
in a SymbolTable, there is no chance you will run into
a oneof.  To reflect this reality, OneofDef no longer
derives from Def, and the UPB_DEF_ONEOF is no longer
an enum value that needs to be handled.

0 files changed, 0 insertions, 0 deletions