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/runtime/base/length_prefixed_array.h b/runtime/base/length_prefixed_array.h
index a570b81..2df5a99 100644
--- a/runtime/base/length_prefixed_array.h
+++ b/runtime/base/length_prefixed_array.h
@@ -20,10 +20,10 @@
 #include <stddef.h>  // for offsetof()
 #include <string.h>  // for memset()
 
-#include "stride_iterator.h"
 #include "base/bit_utils.h"
 #include "base/casts.h"
 #include "base/iteration_range.h"
+#include "stride_iterator.h"
 
 namespace art {