Media Controls: move simple buttons to modules/.

third_party/WebKit/Source/modules/media_controls/elements/MediaControlOverlayPlayButtonElement.h

+// Copyright 2017 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 MediaControlOverlayPlayButtonElement_h
+#define MediaControlOverlayPlayButtonElement_h
+
+#include "core/html/shadow/MediaControlElementTypes.h"
+
+namespace blink {
+
+class Event;
+class MediaControlsImpl;
+
+class MediaControlOverlayPlayButtonElement final
+    : public MediaControlInputElement {
+ public:
+  explicit MediaControlOverlayPlayButtonElement(MediaControlsImpl&);
+
+  // MediaControlInputElement overrides.
+  void UpdateDisplayType() override;
+
+ private:
+  void DefaultEventHandler(Event*) override;
+  bool KeepEventInNode(Event*) override;
+};
+
+}  // namespace blink
+
+#endif  // MediaControlOverlayPlayButtonElement_h