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

Source/web/WebDocument.cpp

 /*
  * Copyright (C) 2009 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 35 matching lines @@
 #include "core/html/HTMLAllCollection.h"
 #include "core/html/HTMLBodyElement.h"
 #include "core/html/HTMLCollection.h"
 #include "core/html/HTMLElement.h"
 #include "core/html/HTMLFormElement.h"
 #include "core/html/HTMLHeadElement.h"
 #include "core/html/HTMLLinkElement.h"
 #include "core/loader/DocumentLoader.h"
 #include "core/rendering/RenderObject.h"
 #include "core/rendering/RenderView.h"
+#include "modules/accessibility/AXObject.h"
 #include "platform/weborigin/SecurityOrigin.h"
 #include "public/platform/WebURL.h"
 #include "public/web/WebAXObject.h"
 #include "public/web/WebDOMEvent.h"
 #include "public/web/WebDocumentType.h"
 #include "public/web/WebElement.h"
 #include "public/web/WebElementCollection.h"
 #include "public/web/WebFormElement.h"
 #include "public/web/WebNodeList.h"
 #include "web/WebLocalFrameImpl.h"
@@ skipping 295 matching lines @@
     m_private = elem;
     return *this;
 }
 
 WebDocument::operator PassRefPtrWillBeRawPtr<Document>() const
 {
     return toDocument(m_private.get());
 }
 
 } // namespace blink