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

Source/core/accessibility/AXScrollbar.h

Index: Source/core/accessibility/AXScrollbar.h
diff --git a/Source/core/accessibility/AXScrollbar.h b/Source/core/accessibility/AXScrollbar.h
deleted file mode 100644
index 50c2c7fa8c10f8061a1defa3d22bfc07333ba810..0000000000000000000000000000000000000000
--- a/Source/core/accessibility/AXScrollbar.h
+++ /dev/null
@@ -1,73 +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.
- * 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 AXScrollbar_h
-#define AXScrollbar_h
-
-#include "core/accessibility/AXMockObject.h"
-
-namespace blink {
-
-class Scrollbar;
-
-class AXScrollbar final : public AXMockObject {
-public:
-    static PassRefPtr<AXScrollbar> create(Scrollbar*);
-
-    Scrollbar* scrollbar() const { return m_scrollbar.get(); }
-
-private:
-    explicit AXScrollbar(Scrollbar*);
-
-    virtual void detachFromParent() override;
-
-    virtual bool canSetValueAttribute() const override { return true; }
-
-    virtual bool isAXScrollbar() const override { return true; }
-    virtual LayoutRect elementRect() const override;
-
-    virtual AccessibilityRole roleValue() const override { return ScrollBarRole; }
-    virtual AccessibilityOrientation orientation() const override;
-    virtual Document* document() const override;
-
-    virtual bool isEnabled() const override;
-
-    // Assumes float [0..1]
-    virtual void setValue(float) override;
-    virtual float valueForRange() const override;
-
-    // FIXME: Oilpan: turn this into a Member once the AXObject
-    // hierarchy is on the heap.
-    RefPtrWillBePersistent<Scrollbar> m_scrollbar;
-};
-
-DEFINE_AX_OBJECT_TYPE_CASTS(AXScrollbar, isAXScrollbar());
-
-} // namespace blink
-
-#endif // AXScrollbar_h