Fix merge by inverting macro order

This CL has no impact on google3

PiperOrigin-RevId: 360265346
Change-Id: I2ff5a576abb8df2f37f592833efcc0ebea33a5b8

quic/core/http/http_constants.h

diff --git a/quic/core/http/http_constants.h b/quic/core/http/http_constants.h
index afb18d6..9757e72 100644
--- a/quic/core/http/http_constants.h
+++ b/quic/core/http/http_constants.h
@@ -60,7 +60,7 @@
 // SETTINGS_QPACK_BLOCKED_STREAMS.
 enum : uint64_t { kDefaultMaximumBlockedStreams = 100 };
 
-QUIC_EXPORT_PRIVATE ABSL_CONST_INIT extern const absl::string_view
+ABSL_CONST_INIT QUIC_EXPORT_PRIVATE extern const absl::string_view
     kUserAgentHeaderName;
 
 }  // namespace quic