Create Source/modules/accessibility/ and move most of core/accessibility/* into it

Source/modules/accessibility/AXScrollbar.h

 /*
  * Copyright (C) 2010 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
@@ skipping 11 matching lines @@
  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef AXScrollbar_h
 #define AXScrollbar_h
 
-#include "core/accessibility/AXMockObject.h"
+#include "modules/accessibility/AXMockObject.h"
 
 namespace blink {
 
 class Scrollbar;
 
 class AXScrollbar final : public AXMockObject {
 public:
     static PassRefPtr<AXScrollbar> create(Scrollbar*);
 
     Scrollbar* scrollbar() const { return m_scrollbar.get(); }
@@ skipping 21 matching lines @@
     // FIXME: Oilpan: turn this into a Member once the AXObject
     // hierarchy is on the heap.
     RefPtrWillBePersistent<Scrollbar> m_scrollbar;
 };
 
 DEFINE_AX_OBJECT_TYPE_CASTS(AXScrollbar, isAXScrollbar());
 
 } // namespace blink
 
 #endif // AXScrollbar_h