WebFrame::selectRange and moveCaret should behave like mouse selection

Source/core/page/EventHandler.cpp

Index: Source/core/page/EventHandler.cpp
diff --git a/Source/core/page/EventHandler.cpp b/Source/core/page/EventHandler.cpp
index f158f9700059c75ffdd95941b30daf35a0f83709..9bb5a3376f037512fe89eece2325e0ed91cba011 100644
--- a/Source/core/page/EventHandler.cpp
+++ b/Source/core/page/EventHandler.cpp
@@ -698,26 +698,6 @@ void EventHandler::updateSelectionForMouseDrag()
     updateSelectionForMouseDrag(result);
 }
 
-static VisiblePosition selectionExtentRespectingEditingBoundary(const VisibleSelection& selection, const LayoutPoint& localPoint, Node* targetNode)
-{
-    LayoutPoint selectionEndPoint = localPoint;
-    Element* editableElement = selection.rootEditableElement();
-
-    if (!targetNode->renderer())
-        return VisiblePosition();
-
-    if (editableElement && !editableElement->contains(targetNode)) {
-        if (!editableElement->renderer())
-            return VisiblePosition();
-
-        FloatPoint absolutePoint = targetNode->renderer()->localToAbsolute(FloatPoint(selectionEndPoint));
-        selectionEndPoint = roundedLayoutPoint(editableElement->renderer()->absoluteToLocal(absolutePoint));
-        targetNode = editableElement;
-    }
-
-    return targetNode->renderer()->positionForPoint(selectionEndPoint);
-}
-
 void EventHandler::updateSelectionForMouseDrag(const HitTestResult& hitTestResult)
 {
     if (!m_mouseDownMayStartSelect)
@@ -727,8 +707,7 @@ void EventHandler::updateSelectionForMouseDrag(const HitTestResult& hitTestResul
     if (!target)
         return;
 
-    VisiblePosition targetPosition = selectionExtentRespectingEditingBoundary(m_frame->selection()->selection(), hitTestResult.localPoint(), target);
-
+    VisiblePosition targetPosition = m_frame->selection()->selection().visiblePositionRespectingEditingBoundary(hitTestResult.localPoint(), target);
     // Don't modify the selection if we're not on a node.
     if (targetPosition.isNull())
         return;