Introduce composed tree version of endOfParagraph()

Source/core/editing/VisibleUnits.h

Index: Source/core/editing/VisibleUnits.h
diff --git a/Source/core/editing/VisibleUnits.h b/Source/core/editing/VisibleUnits.h
index 9cd613cb17c73b67b54290273b060616a8ba52db..eaefccee811f47f13e3f925b1571c0f773eea7dd 100644
--- a/Source/core/editing/VisibleUnits.h
+++ b/Source/core/editing/VisibleUnits.h
@@ -135,7 +135,8 @@ VisiblePosition rightBoundaryOfLine(const VisiblePosition&, TextDirection);
 
 // paragraphs (perhaps a misnomer, can be divided by line break elements)
 VisiblePosition startOfParagraph(const VisiblePosition&, EditingBoundaryCrossingRule = CannotCrossEditingBoundary);
-VisiblePosition endOfParagraph(const VisiblePosition&, EditingBoundaryCrossingRule = CannotCrossEditingBoundary);
+CORE_EXPORT VisiblePosition endOfParagraph(const VisiblePosition&, EditingBoundaryCrossingRule = CannotCrossEditingBoundary);
+CORE_EXPORT VisiblePositionInComposedTree endOfParagraph(const VisiblePositionInComposedTree&, EditingBoundaryCrossingRule = CannotCrossEditingBoundary);
 VisiblePosition startOfNextParagraph(const VisiblePosition&);
 VisiblePosition previousParagraphPosition(const VisiblePosition&, LayoutUnit x);
 VisiblePosition nextParagraphPosition(const VisiblePosition&, LayoutUnit x);