Make header include guards great again

runtime/platform/utils.h

Index: runtime/platform/utils.h
diff --git a/runtime/platform/utils.h b/runtime/platform/utils.h
index 65bc14f5854c84e001b4d4f7cdc608c3b02c5926..b67c96e6d59161111613ee6885093b781e63580f 100644
--- a/runtime/platform/utils.h
+++ b/runtime/platform/utils.h
@@ -2,8 +2,8 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-#ifndef PLATFORM_UTILS_H_
-#define PLATFORM_UTILS_H_
+#ifndef RUNTIME_PLATFORM_UTILS_H_
+#define RUNTIME_PLATFORM_UTILS_H_
 
 #include "platform/assert.h"
 #include "platform/globals.h"
@@ -227,4 +227,4 @@ class Utils {
 #error Unknown target os.
 #endif
 
-#endif  // PLATFORM_UTILS_H_
+#endif  // RUNTIME_PLATFORM_UTILS_H_