Move core MediaControls implementation to modules/media_controls/.

third_party/WebKit/Source/core/html/shadow/MediaControlsMediaEventListener.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 MediaControlsMediaEventListener_h
 #define MediaControlsMediaEventListener_h
 
+#include "core/CoreExport.h"
 #include "core/events/EventListener.h"
 
 namespace blink {
 
 class HTMLMediaElement;
 class MediaControls;
 
-class MediaControlsMediaEventListener final : public EventListener {
+class CORE_EXPORT MediaControlsMediaEventListener final : public EventListener {
  public:
   explicit MediaControlsMediaEventListener(MediaControls*);
 
   // Called by MediaControls when the HTMLMediaElement is added to a document
   // document. All event listeners should be added.
   void attach();
 
   // Called by MediaControls when the HTMLMediaElement is no longer in the
   // document. All event listeners should be removed in order to prepare the
   // object to be garbage collected.
   void detach();
 
   bool operator==(const EventListener&) const override;
 
   DECLARE_VIRTUAL_TRACE();
 
  private:
   HTMLMediaElement& mediaElement();
 
   void handleEvent(ExecutionContext*, Event*) override;
 
   Member<MediaControls> m_mediaControls;
 };
 
 }  // namespace blink
 
 #endif  // MediaControlsMediaEventListener_h