Include pruning and general cleanup.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@169095 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/VTableBuilder.cpp b/lib/AST/VTableBuilder.cpp
index 33dad40..1ab2b99 100644
--- a/lib/AST/VTableBuilder.cpp
+++ b/lib/AST/VTableBuilder.cpp
@@ -17,6 +17,7 @@
 #include "clang/AST/RecordLayout.h"
 #include "clang/Basic/TargetInfo.h"
 #include "llvm/Support/Format.h"
+#include "llvm/Support/raw_ostream.h"
 #include <algorithm>
 #include <cstdio>