Media Remoting: Add interstitial elements to media element shadow dom.

third_party/WebKit/Source/core/html/shadow/MediaControlElements.h

Index: third_party/WebKit/Source/core/html/shadow/MediaControlElements.h
diff --git a/third_party/WebKit/Source/core/html/shadow/MediaControlElements.h b/third_party/WebKit/Source/core/html/shadow/MediaControlElements.h
index df272a9493bee9dd77330ad7c5154beb82b50715..337a0a365935239c67f9698b6acff6dc66e1d012 100644
--- a/third_party/WebKit/Source/core/html/shadow/MediaControlElements.h
+++ b/third_party/WebKit/Source/core/html/shadow/MediaControlElements.h
@@ -31,6 +31,7 @@
 #define MediaControlElements_h
 
 #include "core/html/shadow/MediaControlElementTypes.h"
+#include "core/html/shadow/MediaRemotingInterstitial.h"
 #include "public/platform/WebLocalizedString.h"
 
 namespace blink {
@@ -383,6 +384,27 @@ class MediaControlCurrentTimeDisplayElement final
   explicit MediaControlCurrentTimeDisplayElement(MediaControls&);
 };
 
+// ----------------------------
+
+class MediaRemotingDisableButtonElement final : public HTMLInputElement {
+ public:
+  explicit MediaRemotingDisableButtonElement(MediaRemotingInterstitial&);
+
+  void show();
+  void hide();
+  HTMLMediaElement& mediaElement() const {
+    return m_interstitial->mediaElement();
+  }
+
+  DECLARE_VIRTUAL_TRACE();
+
+ private:
+  class MouseEventsListener;
+
+  Member<MediaRemotingInterstitial> m_interstitial;
+  Member<MouseEventsListener> m_listener;
+};
+
 }  // namespace blink
 
 #endif  // MediaControlElements_h