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

Source/core/dom/Document.h

Index: Source/core/dom/Document.h
diff --git a/Source/core/dom/Document.h b/Source/core/dom/Document.h
index e822620b9d2901c53141f655b292b894d7493c4a..4fa870bdcf8ccd59138f293e85766194fe2c40c7 100644
--- a/Source/core/dom/Document.h
+++ b/Source/core/dom/Document.h
@@ -473,7 +473,7 @@ public:
     // Special support for editing
     PassRefPtr<Text> createEditingTextNode(const String&);
 
-    void setStyleDependentState(RenderStyle* documentStyle);
+    void setupFontBuilder(RenderStyle* documentStyle);
 
     void updateStyleIfNeeded();
     void updateStyleForNodeIfNeeded(Node*);
@@ -781,6 +781,12 @@ public:
 
     HTMLHeadElement* head();
 
+    // Decide which element is to define the viewport's overflow policy. If |rootStyle| is set, use
+    // that as the style for the root element, rather than obtaining it on our own. The reason for
+    // this is that style may not have been associated with the elements yet - in which case it may
+    // have been calculated on the fly (without associating it with the actual element) somewhere.
+    Element* viewportDefiningElement(RenderStyle* rootStyle = 0) const;
+
     DocumentMarkerController* markers() const { return m_markers.get(); }
 
     bool directionSetOnDocumentElement() const { return m_directionSetOnDocumentElement; }