Support subtitles for native fullscreen video

Source/web/WebMediaPlayerClientImpl.h

 /*
  * Copyright (C) 2009 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 113 matching lines @@
     virtual void paintCurrentFrameInContext(WebCore::GraphicsContext*, const WebCore::IntRect&) OVERRIDE;
     virtual bool copyVideoTextureToPlatformTexture(WebCore::GraphicsContext3D*, Platform3DObject texture, GC3Dint level, GC3Denum type, GC3Denum internalFormat, bool premultiplyAlpha, bool flipY) OVERRIDE;
     virtual void setPreload(WebCore::MediaPlayer::Preload) OVERRIDE;
     virtual bool hasSingleSecurityOrigin() const OVERRIDE;
     virtual bool didPassCORSAccessCheck() const OVERRIDE;
     virtual double mediaTimeForTimeValue(double timeValue) const OVERRIDE;
     virtual unsigned decodedFrameCount() const OVERRIDE;
     virtual unsigned droppedFrameCount() const OVERRIDE;
     virtual unsigned audioDecodedByteCount() const OVERRIDE;
     virtual unsigned videoDecodedByteCount() const OVERRIDE;
-#if USE(NATIVE_FULLSCREEN_VIDEO)
-    virtual void enterFullscreen() OVERRIDE;
-    virtual void exitFullscreen() OVERRIDE;
-    virtual bool canEnterFullscreen() const OVERRIDE;
-#endif
+    virtual void showFullscreenOverlay() OVERRIDE;
+    virtual void hideFullscreenOverlay() OVERRIDE;
+    virtual bool canShowFullscreenOverlay() const OVERRIDE;
 
 #if ENABLE(WEB_AUDIO)
     virtual WebCore::AudioSourceProvider* audioSourceProvider() OVERRIDE;
 #endif
 
     virtual bool supportsAcceleratedRendering() const OVERRIDE;
 
     virtual WebCore::MediaPlayer::MediaKeyException generateKeyRequest(const String& keySystem, const unsigned char* initData, unsigned initDataLength) OVERRIDE;
     virtual WebCore::MediaPlayer::MediaKeyException addKey(const String& keySystem, const unsigned char* key, unsigned keyLength, const unsigned char* initData, unsigned initDataLength, const String& sessionId) OVERRIDE;
     virtual WebCore::MediaPlayer::MediaKeyException cancelKeyRequest(const String& keySystem, const String& sessionId) OVERRIDE;
@@ skipping 77 matching lines @@
 
     AudioSourceProviderImpl m_audioSourceProvider;
 #endif
 
     RefPtr<WebCore::HTMLMediaSource> m_mediaSource;
 };
 
 } // namespace WebKit
 
 #endif