Remove the Pagination struct, clean up viewport scroll policy propagation.

Source/core/rendering/Pagination.h

-/*
- * Copyright (C) 2012 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. 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 INC. 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 Pagination_h
-#define Pagination_h
-
-namespace WebCore {
-
-class RenderStyle;
-
-struct Pagination {
-    enum Mode { Unpaginated, LeftToRightPaginated, RightToLeftPaginated, TopToBottomPaginated, BottomToTopPaginated };
-
-    Pagination()
-        : mode(Unpaginated)
-        , gap(0)
-    {
-    };
-
-    bool operator==(const Pagination& other) const
-    {
-        return mode == other.mode && gap == other.gap;
-    }
-
-    bool operator!=(const Pagination& other) const
-    {
-        return mode != other.mode || gap != other.gap;
-    }
-
-    Mode mode;
-    unsigned gap;
-
-    static void setStylesForPaginationMode(Mode, RenderStyle*);
-};
-
-} // namespace WebCore
-
-#endif