Fix Chromium merge.

PiperOrigin-RevId: 443540012
diff --git a/quiche/http2/test_tools/http2_random.h b/quiche/http2/test_tools/http2_random.h
index 7682c7f..b4ec618 100644
--- a/quiche/http2/test_tools/http2_random.h
+++ b/quiche/http2/test_tools/http2_random.h
@@ -20,7 +20,7 @@
 // The random number generator used for unit tests.  Since the algorithm is
 // deterministic and fixed, this can be used to reproduce flakes in the unit
 // tests caused by specific random values.
-class QUICHE_EXPORT_PRIVATE Http2Random {
+class QUICHE_NO_EXPORT Http2Random {
  public:
   Http2Random();