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

Source/core/accessibility/AXListBoxOption.h

Index: Source/core/accessibility/AXListBoxOption.h
diff --git a/Source/core/accessibility/AXListBoxOption.h b/Source/core/accessibility/AXListBoxOption.h
deleted file mode 100644
index efdc44e272af1bca3677df89225ac262ab686b41..0000000000000000000000000000000000000000
--- a/Source/core/accessibility/AXListBoxOption.h
+++ /dev/null
@@ -1,71 +0,0 @@
-/*
- * 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
- *     notice, this list of conditions and the following disclaimer in the
- *     documentation and/or other materials provided with the distribution.
- * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
- *     its contributors may be used to endorse or promote products derived
- *     from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "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 OR ITS 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 AXListBoxOption_h
-#define AXListBoxOption_h
-
-#include "core/accessibility/AXRenderObject.h"
-#include "core/html/HTMLElement.h"
-#include "wtf/Forward.h"
-
-namespace blink {
-
-class HTMLSelectElement;
-
-class AXListBoxOption final : public AXRenderObject {
-
-private:
-    AXListBoxOption(RenderObject*);
-public:
-    static PassRefPtr<AXListBoxOption> create(RenderObject*);
-    virtual ~AXListBoxOption();
-
-    virtual AccessibilityRole roleValue() const override { return ListBoxOptionRole; }
-    virtual bool isSelected() const override;
-    virtual bool isEnabled() const override;
-    virtual bool isSelectedOptionActive() const override;
-    virtual void setSelected(bool) override;
-    virtual bool canSetSelectedAttribute() const override;
-    virtual String stringValue() const override;
-    virtual String title() const override { return String(); }
-
-private:
-    virtual bool isListBoxOption() const override { return true; }
-    virtual bool canHaveChildren() const override { return false; }
-    virtual bool computeAccessibilityIsIgnored() const override;
-
-    HTMLSelectElement* listBoxOptionParentNode() const;
-    int listBoxOptionIndex() const;
-    AXObject* listBoxOptionAXObject(HTMLElement*) const;
-};
-
-DEFINE_AX_OBJECT_TYPE_CASTS(AXListBoxOption, isListBoxOption());
-
-} // namespace blink
-
-#endif // AXListBoxOption_h