1 files changed, 37 insertions, 0 deletions
diff --git a/dom/streams/BaseQueuingStrategy.h b/dom/streams/BaseQueuingStrategy.h
new file mode 100644
index 0000000000..eef7147c08
--- /dev/null
+++ b/dom/streams/BaseQueuingStrategy.h
@@ -0,0 +1,37 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_dom_BaseQueuingStrategy_h
+#define mozilla_dom_BaseQueuingStrategy_h
+
+#include "nsCycleCollectionParticipant.h"
+#include "nsIGlobalObject.h"
+
+namespace mozilla::dom {
+
+class BaseQueuingStrategy : public nsISupports {
+ public:
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_CLASS(BaseQueuingStrategy)
+
+  BaseQueuingStrategy(nsISupports* aGlobal, double aHighWaterMark)
+      : mGlobal(do_QueryInterface(aGlobal)), mHighWaterMark(aHighWaterMark) {}
+
+  nsIGlobalObject* GetParentObject() const;
+
+  double HighWaterMark() const { return mHighWaterMark; }
+
+ protected:
+  virtual ~BaseQueuingStrategy() = default;
+
+ protected:
+  nsCOMPtr<nsIGlobalObject> mGlobal;
+  double mHighWaterMark = 0.0;
+};
+
+}  // namespace mozilla::dom
+
+#endif