Pull TypeLocVisitor into its own header file.

llvm-svn: 83112
diff --git a/clang/lib/Frontend/PCHReaderDecl.cpp b/clang/lib/Frontend/PCHReaderDecl.cpp
index 9b28e8b..353a646 100644
--- a/clang/lib/Frontend/PCHReaderDecl.cpp
+++ b/clang/lib/Frontend/PCHReaderDecl.cpp
@@ -18,7 +18,7 @@
 #include "clang/AST/DeclVisitor.h"
 #include "clang/AST/DeclGroup.h"
 #include "clang/AST/Expr.h"
-#include "clang/AST/TypeLoc.h"
+#include "clang/AST/TypeLocVisitor.h"
 using namespace clang;