Merge "GCC: fix ambiguous call to make_optional"
diff --git a/src/base/base64.cc b/src/base/base64.cc
index 437ad67..bb2e3c4 100644
--- a/src/base/base64.cc
+++ b/src/base/base64.cc
@@ -146,7 +146,7 @@
 
   PERFETTO_CHECK(res <= static_cast<ssize_t>(dst.size()));
   dst.resize(static_cast<size_t>(res));
-  return make_optional(dst);
+  return base::make_optional(dst);
 }
 
 }  // namespace base