Notify WebMediaPlayer when HTML video enters full screen.

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 260 matching lines @@
     virtual bool isHTMLAudioElement() const { return false; }
     virtual bool isHTMLVideoElement() const { return false; }
 
     // Temporary callback for crbug.com/487345,402044
     void notifyPositionMayHaveChanged(const IntRect&);
     void updatePositionNotificationRegistration();
 
     WebRemotePlaybackClient* remotePlaybackClient() { return m_remotePlaybackClient; }
     void setRemotePlaybackClient(WebRemotePlaybackClient*);
 
+    // Inform whether the media is in full screen. The media could be in full
+    // screen because either the element itself or its parent element enters
+    // full screen.
+    void updateMediaInFullscreen(bool isFullscreen);
+    bool isMediaInFullscreen() const { return m_isMediaInFullscreen; }
+
 protected:
     HTMLMediaElement(const QualifiedName&, Document&);
     ~HTMLMediaElement() override;
     void dispose();
 
     void parseAttribute(const QualifiedName&, const AtomicString&, const AtomicString&) override;
     void finishParsingChildren() final;
     bool isURLAttribute(const Attribute&) const override;
     void attachLayoutTree(const AttachContext& = AttachContext()) override;
 
@@ skipping 387 matching lines @@
 
     Member<AutoplayExperimentHelper::Client> m_autoplayHelperClient;
     Member<AutoplayExperimentHelper> m_autoplayHelper;
 
     WebRemotePlaybackClient* m_remotePlaybackClient;
 
     // class AutoplayVisibilityObserver;
     Member<ElementVisibilityObserver> m_autoplayVisibilityObserver;
 
     static URLRegistry* s_mediaStreamRegistry;
+
+    // Indicates whether the media is in full screen. When this is true, either
+    // the element itself or its parent element is full screen element.
+    bool m_isMediaInFullscreen;
 };
 
 inline bool isHTMLMediaElement(const HTMLElement& element)
 {
     return isHTMLAudioElement(element) || isHTMLVideoElement(element);
 }
 
 DEFINE_HTMLELEMENT_TYPE_CASTS_WITH_FUNCTION(HTMLMediaElement);
 
 } // namespace blink
 
 #endif // HTMLMediaElement_h