The rest of the Presentation API IDL as stubs.

Source/modules/presentation/PresentationSession.h

+// Copyright 2014 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 PresentationSession_h
+#define PresentationSession_h
+
+#include "core/dom/ContextLifecycleObserver.h"
+#include "core/events/EventTarget.h"
+#include "wtf/text/AtomicString.h"
+#include "wtf/text/WTFString.h"
+
+namespace blink {
+
+class PresentationSession final
+    : public RefCountedGarbageCollectedWillBeGarbageCollectedFinalized<PresentationSession>
+    , public EventTargetWithInlineData
+    , public ContextLifecycleObserver {
+    DEFINE_EVENT_TARGET_REFCOUNTING_WILL_BE_REMOVED(RefCountedGarbageCollected<PresentationSession>);
+    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(PresentationSession);
+    DEFINE_WRAPPERTYPEINFO();
+public:
+    static PresentationSession* create(ExecutionContext*);
+    virtual ~PresentationSession();
+
+    // EventTarget implementation.
+    virtual const AtomicString& interfaceName() const override;
+    virtual ExecutionContext* executionContext() const override;
+
+    virtual void trace(Visitor*) override;
+
+    const String& id() const { return m_id; }
+    const AtomicString& state() const { return m_state; }
+
+    void postMessage(const String& message);
+    void close();
+
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(message);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(statechange);
+
+private:
+    explicit PresentationSession(ExecutionContext*);
+
+    String m_id;
+    AtomicString m_state;
+};
+
+} // namespace blink
+
+#endif // PresentationSession_h