Kill constants.h and fix some copyright headers.

Change-Id: I51c04d731d6de035328781d8ac134ad6fcf49897
diff --git a/src/disassembler_arm.cc b/src/disassembler_arm.cc
index aa7a39b..5211146 100644
--- a/src/disassembler_arm.cc
+++ b/src/disassembler_arm.cc
@@ -16,10 +16,11 @@
 
 #include "disassembler_arm.h"
 
-#include "stringprintf.h"
-
 #include <iostream>
 
+#include "logging.h"
+#include "stringprintf.h"
+
 namespace art {
 namespace arm {