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/mutex.cc b/runtime/base/mutex.cc
index 03dda12..6392198 100644
--- a/runtime/base/mutex.cc
+++ b/runtime/base/mutex.cc
@@ -23,8 +23,8 @@
 
 #include "atomic.h"
 #include "base/logging.h"
-#include "base/time_utils.h"
 #include "base/systrace.h"
+#include "base/time_utils.h"
 #include "base/value_object.h"
 #include "mutex-inl.h"
 #include "scoped_thread_state_change-inl.h"