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

Source/core/css/resolver/StyleAdjuster.cpp

Index: Source/core/css/resolver/StyleAdjuster.cpp
diff --git a/Source/core/css/resolver/StyleAdjuster.cpp b/Source/core/css/resolver/StyleAdjuster.cpp
index 200a70db92e2dfaef148a60e915ee705a07d09e9..6c1487c842cfa43caf534c566ef36f727a5b1780 100644
--- a/Source/core/css/resolver/StyleAdjuster.cpp
+++ b/Source/core/css/resolver/StyleAdjuster.cpp
@@ -39,7 +39,6 @@
 #include "core/html/HTMLTextAreaElement.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/Settings.h"
-#include "core/rendering/Pagination.h"
 #include "core/rendering/RenderTheme.h"
 #include "core/rendering/style/GridPosition.h"
 #include "core/rendering/style/RenderStyle.h"
@@ -307,12 +306,6 @@ void StyleAdjuster::adjustRenderStyle(RenderStyle* style, RenderStyle* parentSty
         style->setOverflowY(OAUTO);
     }
 
-    // Call setStylesForPaginationMode() if a pagination mode is set for any non-root elements. If these
-    // styles are specified on a root element, then they will be incorporated in
-    // StyleAdjuster::styleForDocument().
-    if ((style->overflowY() == OPAGEDX || style->overflowY() == OPAGEDY) && !(e && (e->hasTagName(htmlTag) || e->hasTagName(bodyTag))))
-        Pagination::setStylesForPaginationMode(WebCore::paginationModeForRenderStyle(style), style);
-
     // Table rows, sections and the table itself will support overflow:hidden and will ignore scroll/auto.
     // FIXME: Eventually table sections will support auto and scroll.
     if (style->display() == TABLE || style->display() == INLINE_TABLE