Rename the ASTReader header files.

llvm-svn: 111474
diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index f40fb64..47bfefa 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -18,7 +18,7 @@
 #include "clang/Driver/Option.h"
 #include "clang/Frontend/CompilerInvocation.h"
 #include "clang/Frontend/LangStandard.h"
-#include "clang/Serialization/PCHReader.h"
+#include "clang/Serialization/ASTReader.h"
 #include "llvm/ADT/OwningPtr.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringExtras.h"