Make header include guards great again

runtime/bin/socket.h

Index: runtime/bin/socket.h
diff --git a/runtime/bin/socket.h b/runtime/bin/socket.h
index ea8dade66514571bafc5cbb788263e1a806877f9..7b3985eb555ea98afc1249d3326de27e8d3d0429 100644
--- a/runtime/bin/socket.h
+++ b/runtime/bin/socket.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 BIN_SOCKET_H_
-#define BIN_SOCKET_H_
+#ifndef RUNTIME_BIN_SOCKET_H_
+#define RUNTIME_BIN_SOCKET_H_
 
 #if defined(DART_IO_DISABLED)
 #error "socket.h can only be included on builds with IO enabled"
@@ -475,4 +475,4 @@ class ListeningSocketRegistry {
 }  // namespace bin
 }  // namespace dart
 
-#endif  // BIN_SOCKET_H_
+#endif  // RUNTIME_BIN_SOCKET_H_