Fix adding an anonymous namespace in a chained PCH to a namespace from a previous PCH.
Fix anonymous namespaces in PCH.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130104 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Serialization/ASTCommon.h b/lib/Serialization/ASTCommon.h
index d416699..904f8ed 100644
--- a/lib/Serialization/ASTCommon.h
+++ b/lib/Serialization/ASTCommon.h
@@ -23,7 +23,8 @@
 enum DeclUpdateKind {
   UPD_CXX_SET_DEFINITIONDATA,
   UPD_CXX_ADDED_IMPLICIT_MEMBER,
-  UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION
+  UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION,
+  UPD_CXX_ADDED_ANONYMOUS_NAMESPACE
 };
 
 TypeIdx TypeIdxFromBuiltin(const BuiltinType *BT);