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-rw-r--r--third_party/base/optional.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/third_party/base/optional.h b/third_party/base/optional.h
index ae25724e73..f92101c19b 100644
--- a/third_party/base/optional.h
+++ b/third_party/base/optional.h
@@ -503,4 +503,7 @@ struct hash<pdfium::Optional<T>> {
} // namespace std
+template <class T>
+using Optional = pdfium::Optional<T>;
+
#endif // PDFIUM_THIRD_PARTY_BASE_OPTIONAL_H_