base: Fix/add header #ifndef guards.
Header guards should be defined based on the path and file name of the
header file. Some headers have it wrong, some are missing the guards,
and some just have the matching comment wrong.
R=Nico
BUG=464816
Review URL: https://codereview.chromium.org/985003004
Cr-Commit-Position: refs/heads/master@{#319722}
CrOS-Libchrome-Original-Commit: 301b392761fd8f66f3a701ab1dd011c6e7a55e19
diff --git a/base/callback_forward.h b/base/callback_forward.h
index 7983248..262c306 100644
--- a/base/callback_forward.h
+++ b/base/callback_forward.h
@@ -14,4 +14,4 @@
} // namespace base
-#endif // BASE_CALLBACK_FORWARD_H
+#endif // BASE_CALLBACK_FORWARD_H_