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

Source/modules/accessibility/AXImageMapLink.h

 /*
  * Copyright (C) 2008 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 AXImageMapLink_h
 #define AXImageMapLink_h
 
-#include "core/accessibility/AXMockObject.h"
 #include "core/html/HTMLAreaElement.h"
 #include "core/html/HTMLMapElement.h"
+#include "modules/accessibility/AXMockObject.h"
 
 namespace blink {
 
 class AXImageMapLink final : public AXMockObject {
 
 private:
     AXImageMapLink();
 public:
     static PassRefPtr<AXImageMapLink> create();
     virtual ~AXImageMapLink();
@@ skipping 27 matching lines @@
     virtual void detachFromParent() override;
 
     virtual bool isImageMapLink() const override { return true; }
 };
 
 DEFINE_AX_OBJECT_TYPE_CASTS(AXImageMapLink, isImageMapLink());
 
 } // namespace blink
 
 #endif // AXImageMapLink_h