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

Source/core/accessibility/AXProgressIndicator.h

-/*
- * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public License
- * along with this library; see the file COPYING.LIB.  If not, write to
- * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- *
- */
-
-#ifndef AXProgressIndicator_h
-#define AXProgressIndicator_h
-
-#include "core/accessibility/AXRenderObject.h"
-
-namespace blink {
-
-class HTMLProgressElement;
-class RenderProgress;
-
-class AXProgressIndicator final : public AXRenderObject {
-public:
-    static PassRefPtr<AXProgressIndicator> create(RenderProgress*);
-
-private:
-    virtual AccessibilityRole roleValue() const override { return ProgressIndicatorRole; }
-
-    virtual bool isProgressIndicator() const override { return true; }
-
-    virtual float valueForRange() const override;
-    virtual float maxValueForRange() const override;
-    virtual float minValueForRange() const override;
-
-    explicit AXProgressIndicator(RenderProgress*);
-
-    HTMLProgressElement* element() const;
-    virtual bool computeAccessibilityIsIgnored() const override;
-};
-
-
-} // namespace blink
-
-#endif // AXProgressIndicator_h