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

Source/core/rendering/style/RenderStyle.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *
  * 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
@@ skipping 520 matching lines @@
         return m_background->outline().width();
     }
     bool hasOutline() const { return outlineWidth() > 0 && outlineStyle() > BHIDDEN; }
     EBorderStyle outlineStyle() const { return m_background->outline().style(); }
     OutlineIsAuto outlineStyleIsAuto() const { return static_cast<OutlineIsAuto>(m_background->outline().isAuto()); }
 
     EOverflow overflowX() const { return static_cast<EOverflow>(noninherited_flags._overflowX); }
     EOverflow overflowY() const { return static_cast<EOverflow>(noninherited_flags._overflowY); }
     // It's sufficient to just check one direction, since it's illegal to have visible on only one overflow value.
     bool isOverflowVisible() const { ASSERT(overflowX() != OVISIBLE || overflowX() == overflowY()); return overflowX() == OVISIBLE; }
+    bool isOverflowPaged() const { return overflowY() == OPAGEDX || overflowY() == OPAGEDY; }
 
     EVisibility visibility() const { return static_cast<EVisibility>(inherited_flags._visibility); }
     EVerticalAlign verticalAlign() const { return static_cast<EVerticalAlign>(noninherited_flags._vertical_align); }
     Length verticalAlignLength() const { return m_box->verticalAlign(); }
 
     Length clipLeft() const { return visual->clip.left(); }
     Length clipRight() const { return visual->clip.right(); }
     Length clipTop() const { return visual->clip.top(); }
     Length clipBottom() const { return visual->clip.bottom(); }
     LengthBox clip() const { return visual->clip; }
@@ skipping 271 matching lines @@
     const AtomicString& highlight() const { return rareInheritedData->highlight; }
     const AtomicString& hyphenationString() const { return rareInheritedData->hyphenationString; }
     const AtomicString& locale() const { return rareInheritedData->locale; }
     EBorderFit borderFit() const { return static_cast<EBorderFit>(rareNonInheritedData->m_borderFit); }
     EResize resize() const { return static_cast<EResize>(rareInheritedData->resize); }
     ColumnAxis columnAxis() const { return static_cast<ColumnAxis>(rareNonInheritedData->m_multiCol->m_axis); }
     bool hasInlineColumnAxis() const {
         ColumnAxis axis = columnAxis();
         return axis == AutoColumnAxis || isHorizontalWritingMode() == (axis == HorizontalColumnAxis);
     }
+    bool hasInlinePaginationAxis() const
+    {
+        // If the pagination axis is parallel with the writing mode inline axis, columns may be laid
+        // out along the inline axis, just like for regular multicol. Otherwise, we need to lay out
+        // along the block axis.
+        if (isOverflowPaged())
+            return (overflowY() == OPAGEDX) == isHorizontalWritingMode();
+        return false;
+    }
     ColumnProgression columnProgression() const { return static_cast<ColumnProgression>(rareNonInheritedData->m_multiCol->m_progression); }
     float columnWidth() const { return rareNonInheritedData->m_multiCol->m_width; }
     bool hasAutoColumnWidth() const { return rareNonInheritedData->m_multiCol->m_autoWidth; }
     unsigned short columnCount() const { return rareNonInheritedData->m_multiCol->m_count; }
     bool hasAutoColumnCount() const { return rareNonInheritedData->m_multiCol->m_autoCount; }
     bool specifiesAutoColumns() const { return hasAutoColumnCount() && hasAutoColumnWidth(); }
     bool specifiesColumns() const { return !hasAutoColumnCount() || !hasAutoColumnWidth() || !hasInlineColumnAxis(); }
     ColumnFill columnFill() const { return static_cast<ColumnFill>(rareNonInheritedData->m_multiCol->m_fill); }
     float columnGap() const { return rareNonInheritedData->m_multiCol->m_gap; }
     bool hasNormalColumnGap() const { return rareNonInheritedData->m_multiCol->m_normalGap; }
@@ skipping 1056 matching lines @@
 }
 
 inline bool RenderStyle::hasPseudoElementStyle() const
 {
     return noninherited_flags._pseudoBits & PSEUDO_ELEMENT_MASK;
 }
 
 } // namespace WebCore
 
 #endif // RenderStyle_h