Stay put at the top of the current page when inserting a forced break.

third_party/WebKit/Source/core/layout/LayoutBlock.h

Index: third_party/WebKit/Source/core/layout/LayoutBlock.h
diff --git a/third_party/WebKit/Source/core/layout/LayoutBlock.h b/third_party/WebKit/Source/core/layout/LayoutBlock.h
index 723e398ea0100c31e8f05f150a6bbb571c3d99f3..07df0816b3e15ad1d8fec3cd7860f8d89531baef 100644
--- a/third_party/WebKit/Source/core/layout/LayoutBlock.h
+++ b/third_party/WebKit/Source/core/layout/LayoutBlock.h
@@ -380,15 +380,7 @@ protected:
     bool isPageLogicalHeightKnown(LayoutUnit logicalOffset) const { return pageLogicalHeightForOffset(logicalOffset); }
 
     // Returns the logical offset at the top of the next page, for a given offset.
-    //
-    // If the given offset is at a page boundary, using AssociateWithLatterPage as PageBoundaryRule
-    // will move us one page ahead (since the offset is at the top of the "current" page). Using
-    // AssociateWithFormerPage instead will keep us where we are (since the offset is at the bottom
-    // of the "current" page, which is exactly the same offset as the top offset on the next page).
-    //
-    // For a page height of 800px, AssociateWithLatterPage will return 1600 if the value passed in
-    // is 800. AssociateWithFormerPage will simply return 800.
-    LayoutUnit nextPageLogicalTop(LayoutUnit logicalOffset, PageBoundaryRule) const;
+    LayoutUnit nextPageLogicalTop(LayoutUnit logicalOffset) const;
 
     // Paginated content inside this block was laid out.
     // |logicalBottomOffsetAfterPagination| is the logical bottom offset of the child content after