Introduce composed tree version of localCaretRectOfPosition()

Source/core/editing/VisibleUnits.cpp

Index: Source/core/editing/VisibleUnits.cpp
diff --git a/Source/core/editing/VisibleUnits.cpp b/Source/core/editing/VisibleUnits.cpp
index 80cdc9c240d8dfcca6d1597775a465481da287b8..ac85bc85817d472d232489ab36a93d834adb3bcb 100644
--- a/Source/core/editing/VisibleUnits.cpp
+++ b/Source/core/editing/VisibleUnits.cpp
@@ -1713,7 +1713,8 @@ InlineBoxPosition computeInlineBoxPosition(const PositionInComposedTree& positio
     return computeInlineBoxPositionAlgorithm<EditingInComposedTreeStrategy>(position, affinity, primaryDirection);
 }
 
-LayoutRect localCaretRectOfPosition(const PositionWithAffinity& position, LayoutObject*& layoutObject)
+template <typename Strategy>
+LayoutRect localCaretRectOfPositionAlgorithm(const PositionWithAffinityTemplate<Strategy>& position, LayoutObject*& layoutObject)
 {
     if (position.position().isNull()) {
         layoutObject = nullptr;
@@ -1733,6 +1734,16 @@ LayoutRect localCaretRectOfPosition(const PositionWithAffinity& position, Layout
     return layoutObject->localCaretRect(boxPosition.inlineBox, boxPosition.offsetInBox);
 }
 
+LayoutRect localCaretRectOfPosition(const PositionWithAffinity& position, LayoutObject*& layoutObject)
+{
+    return localCaretRectOfPositionAlgorithm<EditingStrategy>(position, layoutObject);
+}
+
+LayoutRect localCaretRectOfPosition(const PositionInComposedTreeWithAffinity& position, LayoutObject*& layoutObject)
+{
+    return localCaretRectOfPositionAlgorithm<EditingInComposedTreeStrategy>(position, layoutObject);
+}
+
 static int boundingBoxLogicalHeight(LayoutObject *o, const IntRect &rect)
 {
     return o->style()->isHorizontalWritingMode() ? rect.height() : rect.width();