import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

dom/presentation/ControllerConnectionCollection.h

@@ -0,0 +1,49 @@
+/* -*- 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_ControllerConnectionCollection_h
+#define mozilla_dom_ControllerConnectionCollection_h
+
+#include "mozilla/StaticPtr.h"
+#include "mozilla/WeakPtr.h"
+#include "nsString.h"
+#include "nsTArray.h"
+
+namespace mozilla {
+namespace dom {
+
+class PresentationConnection;
+
+class ControllerConnectionCollection final
+{
+public:
+  static ControllerConnectionCollection* GetSingleton();
+
+  void AddConnection(PresentationConnection* aConnection,
+                     const uint8_t aRole);
+
+  void RemoveConnection(PresentationConnection* aConnection,
+                        const uint8_t aRole);
+
+  already_AddRefed<PresentationConnection>
+  FindConnection(uint64_t aWindowId,
+                 const nsAString& aId,
+                 const uint8_t aRole);
+
+private:
+  friend class StaticAutoPtr<ControllerConnectionCollection>;
+
+  ControllerConnectionCollection();
+  virtual ~ControllerConnectionCollection();
+
+  static StaticAutoPtr<ControllerConnectionCollection> sSingleton;
+  nsTArray<WeakPtr<PresentationConnection>> mConnections;
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif // mozilla_dom_ControllerConnectionCollection_h