Add the Presentation API module and a single event target

Source/modules/presentation/Presentation.cpp

+// 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.
+
+#include "config.h"
+#include "modules/presentation/Presentation.h"
+
+#include "core/dom/Document.h"
+#include "core/frame/LocalFrame.h"
+#include "modules/EventTargetModules.h"
+
+namespace blink {
+
+Presentation::Presentation(LocalFrame* frame)
+    : DOMWindowProperty(frame)
+{
+    ScriptWrappable::init(this);
+}
+
+Presentation::~Presentation()
+{
+}
+
+// static
+Presentation* Presentation::create(LocalFrame* frame)
+{
+    return new Presentation(frame);
+}
+
+bool Presentation::displayAvailable() const
+{
+    return true;
+}
+
+const WTF::AtomicString& Presentation::interfaceName() const
+{
+    return EventTargetNames::Presentation;
+}
+
+ExecutionContext* Presentation::executionContext() const
+{
+    if (!frame())
+        return 0;
+    return frame()->document();
+}
+
+void Presentation::trace(Visitor* visitor)
+{
+    EventTargetWithInlineData::trace(visitor);
+}
+
+} // namespace blink