Use HTMLMediaElement's helpers for the video fullscreen button

Source/core/html/shadow/MediaControlElements.cpp

 /*
  * Copyright (C) 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2012 Google 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.
@@ skipping 14 matching lines @@
  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "core/html/shadow/MediaControlElements.h"
 
 #include "bindings/v8/ExceptionStatePlaceholder.h"
 #include "core/dom/DOMTokenList.h"
-#include "core/dom/FullscreenElementStack.h"
 #include "core/dom/shadow/ShadowRoot.h"
 #include "core/events/MouseEvent.h"
 #include "core/frame/LocalFrame.h"
 #include "core/html/HTMLVideoElement.h"
 #include "core/html/MediaController.h"
 #include "core/html/shadow/MediaControls.h"
 #include "core/html/track/TextTrack.h"
 #include "core/html/track/vtt/VTTRegionList.h"
 #include "core/page/EventHandler.h"
 #include "core/rendering/RenderMediaControlElements.h"
@@ skipping 439 matching lines @@
     RefPtrWillBeRawPtr<MediaControlFullscreenButtonElement> button = adoptRefWillBeNoop(new MediaControlFullscreenButtonElement(mediaControls));
     button->ensureUserAgentShadowRoot();
     button->setType("button");
     button->hide();
     return button.release();
 }
 
 void MediaControlFullscreenButtonElement::defaultEventHandler(Event* event)
 {
     if (event->type() == EventTypeNames::click) {
-        if (FullscreenElementStack::isActiveFullScreenElement(mediaElement()))
-            FullscreenElementStack::from(document()).webkitCancelFullScreen();
+        if (mediaElement().isFullscreen())
+            mediaElement().exitFullscreen();
         else
-            FullscreenElementStack::from(document()).requestFullScreenForElement(mediaElement(), 0, FullscreenElementStack::ExemptIFrameAllowFullScreenRequirement);
+            mediaElement().enterFullscreen();
         event->setDefaultHandled();
     }
     HTMLInputElement::defaultEventHandler(event);
 }
 
 const AtomicString& MediaControlFullscreenButtonElement::shadowPseudoId() const
 {
     DEFINE_STATIC_LOCAL(AtomicString, id, ("-webkit-media-controls-fullscreen-button", AtomicString::ConstructFromLiteral));
     return id;
 }
@@ skipping 167 matching lines @@
     float fontSize = smallestDimension * 0.05f;
     if (fontSize != m_fontSize) {
         m_fontSize = fontSize;
         setInlineStyleProperty(CSSPropertyFontSize, fontSize, CSSPrimitiveValue::CSS_PX);
     }
 }
 
 // ----------------------------
 
 } // namespace WebCore