ART: Include cleanup

Let clang-format reorder the header includes.

Derived with:

* .clang-format:
 BasedOnStyle: Google
 IncludeIsMainRegex: '(_test|-inl)?$'

* Steps:
 find . -name '*.cc' -o -name '*.h' | xargs sed -i.bak -e 's/^#include/ #include/' ; git commit -a -m 'ART: Include cleanup'
 git-clang-format -style=file HEAD^
 manual inspection
 git commit -a --amend

Test: mmma art
Change-Id: Ia963a8ce3ce5f96b5e78acd587e26908c7a70d02
diff --git a/compiler/utils/assembler_test.h b/compiler/utils/assembler_test.h
index f655994..ef53d72 100644
--- a/compiler/utils/assembler_test.h
+++ b/compiler/utils/assembler_test.h
@@ -19,14 +19,15 @@
 
 #include "assembler.h"
 
-#include "assembler_test_base.h"
-#include "common_runtime_test.h"  // For ScratchFile
+#include <sys/stat.h>
 
 #include <cstdio>
 #include <cstdlib>
 #include <fstream>
 #include <iterator>
-#include <sys/stat.h>
+
+#include "assembler_test_base.h"
+#include "common_runtime_test.h"  // For ScratchFile
 
 namespace art {