Support for C++11 (non-template) alias declarations.

llvm-svn: 129567
diff --git a/clang/lib/AST/DeclBase.cpp b/clang/lib/AST/DeclBase.cpp
index c081b0d..673b718 100644
--- a/clang/lib/AST/DeclBase.cpp
+++ b/clang/lib/AST/DeclBase.cpp
@@ -427,6 +427,7 @@
       return IDNS_Ordinary | IDNS_Type;
 
     case Typedef:
+    case TypeAlias:
     case UnresolvedUsingTypename:
     case TemplateTypeParm:
       return IDNS_Ordinary | IDNS_Type;