Sync VTTCue.align/vertical with spec

Source/core/html/track/vtt/VTTCue.h

 /*
  * Copyright (c) 2013, Opera Software ASA. 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 54 matching lines @@
 class VTTCue FINAL : public TextTrackCue, public ScriptWrappable {
 public:
     static PassRefPtrWillBeRawPtr<VTTCue> create(Document& document, double startTime, double endTime, const String& text)
     {
         return adoptRefWillBeRefCountedGarbageCollected(new VTTCue(document, startTime, endTime, text));
     }
 
     virtual ~VTTCue();
 
     const String& vertical() const;
-    void setVertical(const String&, ExceptionState&);
+    void setVertical(const String&);
 
     bool snapToLines() const { return m_snapToLines; }
     void setSnapToLines(bool);
 
     int line() const { return m_linePosition; }
     void setLine(int, ExceptionState&);
 
     int position() const { return m_textPosition; }
     void setPosition(int, ExceptionState&);
 
     int size() const { return m_cueSize; }
     void setSize(int, ExceptionState&);
 
     const String& align() const;
-    void setAlign(const String&, ExceptionState&);
+    void setAlign(const String&);
 
     const String& text() const { return m_text; }
     void setText(const String&);
 
     void parseSettings(const String&);
 
     PassRefPtr<DocumentFragment> getCueAsHTML();
     PassRefPtr<DocumentFragment> createCueRenderingTree();
 
     const String& regionId() const { return m_regionId; }
@@ skipping 91 matching lines @@
     bool m_displayTreeShouldChange : 1;
     bool m_notifyRegion : 1;
 };
 
 // VTTCue is currently the only TextTrackCue subclass.
 DEFINE_TYPE_CASTS(VTTCue, TextTrackCue, cue, true, true);
 
 } // namespace WebCore
 
 #endif