Add CXXRecordType class.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@54488 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/Type.cpp b/lib/AST/Type.cpp
index f9f6eca..c4b44af 100644
--- a/lib/AST/Type.cpp
+++ b/lib/AST/Type.cpp
@@ -13,6 +13,7 @@
 
 #include "clang/AST/Type.h"
 #include "clang/AST/Decl.h"
+#include "clang/AST/DeclCXX.h"
 #include "clang/AST/DeclObjC.h"
 #include "clang/AST/Expr.h"
 #include "clang/Basic/IdentifierTable.h"
@@ -739,6 +740,10 @@
   return isa<RecordDecl>(TT->getDecl());
 }
 
+bool CXXRecordType::classof(const TagType *TT) {
+  return isa<CXXRecordDecl>(TT->getDecl());
+}
+
 bool EnumType::classof(const TagType *TT) {
   return isa<EnumDecl>(TT->getDecl());
 }