Make the video layer visibility configurable in OverlayFullscreenVideo mode

third_party/WebKit/Source/core/html/HTMLMediaElement.h

 /*
  * Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 209 matching lines @@
     // ensures that both implementations return document, so return the result
     // of one of them here.
     using HTMLElement::getExecutionContext;
 
     bool hasSingleSecurityOrigin() const { return webMediaPlayer() && webMediaPlayer()->hasSingleSecurityOrigin(); }
 
     bool isFullscreen() const;
     void enterFullscreen();
     void exitFullscreen();
     virtual bool usesOverlayFullscreenVideo() const { return false; }
+    virtual WebMediaPlayer::OverlayFullscreenVideoMode overlayFullscreenVideoMode() const { return WebMediaPlayer::OverlayFullscreenVideoMode::Disabled; }
 
     bool hasClosedCaptions() const;
     bool textTracksVisible() const;
 
     static void setTextTrackKindUserPreferenceForAllMediaElements(Document*);
     void automaticTrackSelectionForUpdatedUserPreference();
 
     // Returns the MediaControls, or null if they have not been added yet.
     // Note that this can be non-null even if there is no controls attribute.
     MediaControls* mediaControls() const;
@@ skipping 435 matching lines @@
 inline bool isHTMLMediaElement(const HTMLElement& element)
 {
     return isHTMLAudioElement(element) || isHTMLVideoElement(element);
 }
 
 DEFINE_HTMLELEMENT_TYPE_CASTS_WITH_FUNCTION(HTMLMediaElement);
 
 } // namespace blink
 
 #endif // HTMLMediaElement_h