Sort all the #include lines with LLVM's utils/sort_includes.py which
encodes the canonical rules for LLVM's style. I noticed this had drifted
quite a bit when cleaning up LLVM, so wanted to clean up Clang as well.

llvm-svn: 198686
diff --git a/clang/unittests/ASTMatchers/Dynamic/RegistryTest.cpp b/clang/unittests/ASTMatchers/Dynamic/RegistryTest.cpp
index 5f30790..c260b46 100644
--- a/clang/unittests/ASTMatchers/Dynamic/RegistryTest.cpp
+++ b/clang/unittests/ASTMatchers/Dynamic/RegistryTest.cpp
@@ -7,11 +7,10 @@
 //
 //===-----------------------------------------------------------------------===//
 
-#include <vector>
-
 #include "../ASTMatchersTest.h"
 #include "clang/ASTMatchers/Dynamic/Registry.h"
 #include "gtest/gtest.h"
+#include <vector>
 
 namespace clang {
 namespace ast_matchers {