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/imgdiag/imgdiag_test.cc b/imgdiag/imgdiag_test.cc
index c948d3c..3245795 100644
--- a/imgdiag/imgdiag_test.cc
+++ b/imgdiag/imgdiag_test.cc
@@ -14,21 +14,21 @@
  * limitations under the License.
  */
 
+#include <sstream>
 #include <string>
 #include <vector>
-#include <sstream>
 
 #include "common_runtime_test.h"
 
 #include "android-base/stringprintf.h"
 
-#include "runtime/os.h"
 #include "runtime/arch/instruction_set.h"
 #include "runtime/exec_utils.h"
-#include "runtime/utils.h"
-#include "runtime/gc/space/image_space.h"
 #include "runtime/gc/heap.h"
+#include "runtime/gc/space/image_space.h"
+#include "runtime/os.h"
 #include "runtime/runtime.h"
+#include "runtime/utils.h"
 
 #include <sys/types.h>
 #include <unistd.h>