Make header include guards great again

runtime/bin/thread_macos.h

Index: runtime/bin/thread_macos.h
diff --git a/runtime/bin/thread_macos.h b/runtime/bin/thread_macos.h
index a074896c678b910683d9d0152fd38c232e7b709d..419bc8b76b60178c9624d3ffa962bcf389110470 100644
--- a/runtime/bin/thread_macos.h
+++ b/runtime/bin/thread_macos.h
@@ -2,10 +2,10 @@
 // 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 BIN_THREAD_MACOS_H_
-#define BIN_THREAD_MACOS_H_
+#ifndef RUNTIME_BIN_THREAD_MACOS_H_
+#define RUNTIME_BIN_THREAD_MACOS_H_
 
-#if !defined(BIN_THREAD_H_)
+#if !defined(RUNTIME_BIN_THREAD_H_)
 #error Do not include thread_macos.h directly; use thread.h instead.
 #endif
 
@@ -74,4 +74,4 @@ class MonitorData {
 }  // namespace bin
 }  // namespace dart
 
-#endif  // BIN_THREAD_MACOS_H_
+#endif  // RUNTIME_BIN_THREAD_MACOS_H_