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

Source/modules/accessibility/AXMenuListPopup.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
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (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 AXMenuListPopup_h
 #define AXMenuListPopup_h
 
-#include "core/accessibility/AXMockObject.h"
+#include "modules/accessibility/AXMockObject.h"
 
 namespace blink {
 
 class AXMenuListOption;
 class HTMLElement;
 
 class AXMenuListPopup final : public AXMockObject {
 public:
     static PassRefPtr<AXMenuListPopup> create() { return adoptRef(new AXMenuListPopup); }
 
@@ skipping 17 matching lines @@
     virtual bool computeAccessibilityIsIgnored() const override;
 
     AXMenuListOption* menuListOptionAXObject(HTMLElement*) const;
 };
 
 DEFINE_AX_OBJECT_TYPE_CASTS(AXMenuListPopup, isMenuListPopup());
 
 } // namespace blink
 
 #endif // AXMenuListPopup_h