Canvas2d: Remove the updateAccessibility() method in HitRegion class.

Source/modules/canvas2d/HitRegion.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef HitRegion_h
 #define HitRegion_h
 
 #include "core/dom/Element.h"
 #include "modules/canvas2d/HitRegionOptions.h"
 #include "platform/graphics/Path.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Noncopyable.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefPtr.h"
 
 namespace blink {
 
 class HitRegion final : public RefCountedWillBeGarbageCollectedFinalized<HitRegion> {
 public:
     static PassRefPtrWillBeRawPtr<HitRegion> create(const Path& path, const HitRegionOptions& options)
     {
         return adoptRefWillBeNoop(new HitRegion(path, options));
     }
 
     virtual ~HitRegion() { }
 
     void removePixels(const Path&);
-    void updateAccessibility(Element* canvas);
 
     bool contains(const LayoutPoint&) const;
     bool contains(const FloatPoint&) const;
 
     const String& id() const { return m_id; }
     const Path& path() const { return m_path; }
     Element* control() const { return m_control.get(); }
     WindRule fillRule() const { return m_fillRule; }
 
     DECLARE_TRACE();
@@ skipping 38 matching lines @@
     typedef WillBeHeapHashMap<RefPtrWillBeMember<Element>, RefPtrWillBeMember<HitRegion>> HitRegionControlMap;
 
     HitRegionList m_hitRegionList;
     HitRegionIdMap m_hitRegionIdMap;
     HitRegionControlMap m_hitRegionControlMap;
 };
 
 } // namespace blink
 
 #endif