Merge System into Support.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120298 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/unittests/Support/SwapByteOrderTest.cpp b/unittests/Support/SwapByteOrderTest.cpp
index ce8704c..c2a0c27 100644
--- a/unittests/Support/SwapByteOrderTest.cpp
+++ b/unittests/Support/SwapByteOrderTest.cpp
@@ -8,7 +8,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "gtest/gtest.h"
-#include "llvm/System/SwapByteOrder.h"
+#include "llvm/Support/SwapByteOrder.h"
 #include <cstdlib>
 #include <ctime>
 using namespace llvm;