Move VTT functionality from TextTrackCue.* to VTTCue.*

Source/core/rendering/RenderVTTCue.h

Index: Source/core/rendering/RenderVTTCue.h
diff --git a/Source/core/rendering/RenderTextTrackCue.h b/Source/core/rendering/RenderVTTCue.h
similarity index 84%
copy from Source/core/rendering/RenderTextTrackCue.h
copy to Source/core/rendering/RenderVTTCue.h
index ee0209792a3c9c353ccfec45be9f0a8a55b9aaf2..4c5e5f6393013d85b32c51d42683d8d50dbea763 100644
--- a/Source/core/rendering/RenderTextTrackCue.h
+++ b/Source/core/rendering/RenderVTTCue.h
@@ -23,24 +23,24 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef RenderTextTrackCue_h
-#define RenderTextTrackCue_h
+#ifndef RenderVTTCue_h
+#define RenderVTTCue_h
 
-#include "core/rendering/RenderBlockFlow.h"
 #include "core/rendering/RenderInline.h"
+#include "core/rendering/RenderTextTrackCue.h"
 #include "platform/geometry/FloatPoint.h"
 
 namespace WebCore {
 
-class TextTrackCueBox;
+class VTTCue;
+class VTTCueBox;
 
-class RenderTextTrackCue FINAL : public RenderBlockFlow {
+class RenderVTTCue FINAL : public RenderTextTrackCue {
 public:
-    explicit RenderTextTrackCue(TextTrackCueBox*);
+    explicit RenderVTTCue(VTTCueBox*);
 
 private:
     virtual void layout() OVERRIDE;
-    virtual bool supportsPartialLayout() const OVERRIDE { return false; }
 
     bool isOutside() const;
     bool isOverlapping() const;
@@ -55,10 +55,10 @@ private:
     void repositionCueSnapToLinesSet();
     void repositionCueSnapToLinesNotSet();
 
-    TextTrackCue* m_cue;
+    VTTCue* m_cue;
     FloatPoint m_fallbackPosition;
 };
 
 } // namespace WebCore
 
-#endif // RenderTextTrackCue_h
+#endif // RenderVTTCue_h