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/optimizing/scheduler.h b/compiler/optimizing/scheduler.h
index 930a2c8..66ffac5 100644
--- a/compiler/optimizing/scheduler.h
+++ b/compiler/optimizing/scheduler.h
@@ -20,11 +20,11 @@
 #include <fstream>
 
 #include "base/time_utils.h"
+#include "code_generator.h"
 #include "driver/compiler_driver.h"
 #include "load_store_analysis.h"
 #include "nodes.h"
 #include "optimization.h"
-#include "code_generator.h"
 
 namespace art {