Move a few media controls elements into modules/media_controls/elements/.

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

Index: third_party/WebKit/Source/modules/media_controls/elements/MediaControlOverlayEnclosureElement.h
diff --git a/third_party/WebKit/Source/modules/media_controls/elements/MediaControlOverlayEnclosureElement.h b/third_party/WebKit/Source/modules/media_controls/elements/MediaControlOverlayEnclosureElement.h
new file mode 100644
index 0000000000000000000000000000000000000000..c9451c39f9585ab28e49651eabd30ca44aa0acfa
--- /dev/null
+++ b/third_party/WebKit/Source/modules/media_controls/elements/MediaControlOverlayEnclosureElement.h
@@ -0,0 +1,27 @@
+// 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 MediaControlOverlayEnclosureElement_h
+#define MediaControlOverlayEnclosureElement_h
+
+#include "core/html/shadow/MediaControlElementTypes.h"
+
+namespace blink {
+
+class Event;
+class EventDispatchHandlingState;
+class MediaControlsImpl;
+
+class MediaControlOverlayEnclosureElement final
+    : public MediaControlDivElement {
+ public:
+  explicit MediaControlOverlayEnclosureElement(MediaControlsImpl&);
+
+ private:
+  EventDispatchHandlingState* PreDispatchEventHandler(Event*) override;
+};
+
+}  // namespace blink
+
+#endif  // MediaControlOverlayEnclosureElement_h