[Presentation API] make PresentationReceiver API consistent with latest spec

third_party/WebKit/Source/modules/presentation/PresentationConnectionList.h

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PresentationConnectionList_h
+#define PresentationConnectionList_h
+
+#include "core/dom/ContextLifecycleObserver.h"
+#include "core/events/EventTarget.h"
+#include "modules/presentation/PresentationConnection.h"
+#include "platform/heap/Handle.h"
+#include "platform/heap/Heap.h"
+
+namespace blink {
+
+// Implements the PresentationConnectionList interface from the Presentation API from
+// which represents set of presentation connections in the set of
+// presentation controllers.
+class PresentationConnectionList final
+    : public EventTargetWithInlineData
+    , public ContextLifecycleObserver {
+    USING_GARBAGE_COLLECTED_MIXIN(PresentationConnectionList);
+    DEFINE_WRAPPERTYPEINFO();
+public:
+    explicit PresentationConnectionList(ExecutionContext*);
+    ~PresentationConnectionList() = default;
+
+    // EventTarget implementation.
+    const AtomicString& interfaceName() const override;
+    ExecutionContext* getExecutionContext() const override;
+
+    const HeapVector<Member<PresentationConnection>>& connections() const;
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(connectionavailable);
+
+    DECLARE_VIRTUAL_TRACE();
+
+private:
+    HeapVector<Member<PresentationConnection>> m_connections;
+};
+
+} // namespace blink
+
+#endif // PresentationConnectionList_h