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

Source/core/accessibility/AXMenuListOption.h

Index: Source/core/accessibility/AXMenuListOption.h
diff --git a/Source/core/accessibility/AXMenuListOption.h b/Source/core/accessibility/AXMenuListOption.h
deleted file mode 100644
index ebae5fe0cae41c5b970fef73fae9429a29364021..0000000000000000000000000000000000000000
--- a/Source/core/accessibility/AXMenuListOption.h
+++ /dev/null
@@ -1,67 +0,0 @@
-/*
- * 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 AXMenuListOption_h
-#define AXMenuListOption_h
-
-#include "core/accessibility/AXMockObject.h"
-
-namespace blink {
-
-class HTMLElement;
-
-class AXMenuListOption final : public AXMockObject {
-public:
-    static PassRefPtr<AXMenuListOption> create() { return adoptRef(new AXMenuListOption); }
-
-    void setElement(HTMLElement*);
-
-private:
-    AXMenuListOption();
-
-    virtual bool isMenuListOption() const override { return true; }
-
-    virtual AccessibilityRole roleValue() const override { return MenuListOptionRole; }
-    virtual bool canHaveChildren() const override { return false; }
-
-    virtual Element* actionElement() const override;
-    virtual bool isEnabled() const override;
-    virtual bool isVisible() const override;
-    virtual bool isOffScreen() const override;
-    virtual bool isSelected() const override;
-    virtual void setSelected(bool) override;
-    virtual bool canSetSelectedAttribute() const override;
-    virtual LayoutRect elementRect() const override;
-    virtual String stringValue() const override;
-    virtual bool computeAccessibilityIsIgnored() const override;
-
-    RefPtrWillBePersistent<HTMLElement> m_element;
-};
-
-DEFINE_AX_OBJECT_TYPE_CASTS(AXMenuListOption, isMenuListOption());
-
-} // namespace blink
-
-#endif // AXMenuListOption_h