Update PPAPI IDL generator to define versioned structs, and unversioned typedef.

ppapi/thunk/ppb_tcp_socket_private_thunk.cc

Index: ppapi/thunk/ppb_tcp_socket_private_thunk.cc
diff --git a/ppapi/thunk/ppb_tcp_socket_private_thunk.cc b/ppapi/thunk/ppb_tcp_socket_private_thunk.cc
index 245654d8a698e9601535349a1f3f99414ee8c5f3..ed39f0cd64899f492551f1ea89553aba687e96cf 100644
--- a/ppapi/thunk/ppb_tcp_socket_private_thunk.cc
+++ b/ppapi/thunk/ppb_tcp_socket_private_thunk.cc
@@ -120,10 +120,9 @@ const PPB_TCPSocket_Private g_ppb_tcp_socket_thunk = {
 
 }  // namespace
 
-const PPB_TCPSocket_Private* GetPPB_TCPSocket_Private_Thunk() {
+const PPB_TCPSocket_Private_0_3* GetPPB_TCPSocket_Private_0_3_Thunk() {
   return &g_ppb_tcp_socket_thunk;
 }
 
 }  // namespace thunk
 }  // namespace ppapi
-