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/native/dalvik_system_VMStack.cc b/runtime/native/dalvik_system_VMStack.cc
index 2aeef60..a88563d 100644
--- a/runtime/native/dalvik_system_VMStack.cc
+++ b/runtime/native/dalvik_system_VMStack.cc
@@ -21,11 +21,11 @@
 #include "art_method-inl.h"
 #include "gc/task_processor.h"
 #include "jni_internal.h"
-#include "nth_caller_visitor.h"
 #include "mirror/class-inl.h"
 #include "mirror/class_loader.h"
 #include "mirror/object-inl.h"
 #include "native_util.h"
+#include "nth_caller_visitor.h"
 #include "scoped_fast_native_object_access-inl.h"
 #include "scoped_thread_state_change-inl.h"
 #include "thread_list.h"