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

Source/core/frame/FrameView.h

Index: Source/core/frame/FrameView.h
diff --git a/Source/core/frame/FrameView.h b/Source/core/frame/FrameView.h
index 8db5cf6ad089e0a0bef5528a16ad0a19ce294b95..8fd4a168667bd74b2c5068cb5c444c6773b485a3 100644
--- a/Source/core/frame/FrameView.h
+++ b/Source/core/frame/FrameView.h
@@ -26,7 +26,6 @@
 #define FrameView_h
 
 #include "core/frame/AdjustViewSizeOrNot.h"
-#include "core/rendering/Pagination.h"
 #include "core/rendering/PaintPhase.h"
 #include "core/rendering/PartialLayoutState.h"
 #include "platform/geometry/LayoutRect.h"
@@ -52,8 +51,6 @@ class RenderScrollbarPart;
 class RenderStyle;
 class RenderWidget;
 
-Pagination::Mode paginationModeForRenderStyle(RenderStyle*);
-
 typedef unsigned long long DOMTimeStamp;
 
 class FrameView FINAL : public ScrollView {
@@ -296,8 +293,6 @@ public:
     // we need this function in order to do the scroll ourselves.
     bool wheelEvent(const PlatformWheelEvent&);
 
-    const Pagination& pagination() const { return m_pagination; }
-
     bool inProgrammaticScroll() const { return m_inProgrammaticScroll; }
     void setInProgrammaticScroll(bool programmaticScroll) { m_inProgrammaticScroll = programmaticScroll; }
 
@@ -338,9 +333,6 @@ private:
     bool contentsInCompositedLayer() const;
 
     void applyOverflowToViewportAndSetRenderer(RenderObject*, ScrollbarMode& hMode, ScrollbarMode& vMode);
-    void applyPaginationToViewport();
-    void setPagination(const Pagination&);
-
     void updateOverflowStatus(bool horizontalOverflow, bool verticalOverflow);
 
     void paintControlTints();
@@ -468,8 +460,6 @@ private:
     bool m_verticalOverflow;
     RenderObject* m_viewportRenderer;
 
-    Pagination m_pagination;
-
     bool m_wasScrolledByUser;
     bool m_inProgrammaticScroll;
     bool m_safeToPropagateScrollToParent;