Baby steps towards making thunks be emitted from the new vtable layout code.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99254 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGVtable.h b/lib/CodeGen/CGVtable.h
index ae2263e..ba5a429 100644
--- a/lib/CodeGen/CGVtable.h
+++ b/lib/CodeGen/CGVtable.h
@@ -186,6 +186,9 @@
                                     bool GenerateDefinition,
                                     const CXXRecordDecl *RD);
 
+  /// EmitThunks - Emit the associated thunks for the given global decl.
+  void EmitThunks(GlobalDecl GD);
+  
 public:
   CodeGenVTables(CodeGenModule &CGM)
     : CGM(CGM) { }