Get rid of flat tree version of createVisibleSelection() taking two VisiblePosition

third_party/WebKit/Source/modules/accessibility/AXLayoutObject.cpp

Index: third_party/WebKit/Source/modules/accessibility/AXLayoutObject.cpp
diff --git a/third_party/WebKit/Source/modules/accessibility/AXLayoutObject.cpp b/third_party/WebKit/Source/modules/accessibility/AXLayoutObject.cpp
index 2cccbc35bf9f0e8bf1c4a3d7fa8f155c876f9869..ee1316fe1eb25b8dc2a7df9e0b02eb743f56fce7 100644
--- a/third_party/WebKit/Source/modules/accessibility/AXLayoutObject.cpp
+++ b/third_party/WebKit/Source/modules/accessibility/AXLayoutObject.cpp
@@ -1952,7 +1952,10 @@ void AXLayoutObject::setSelection(const AXRange& selection) {
     return;
 
   frame->selection().setSelection(
-      createVisibleSelection(anchorVisiblePosition, focusVisiblePosition));
+      SelectionInDOMTree::Builder()
+          .collapse(anchorVisiblePosition.toPositionWithAffinity())
+          .extend(focusVisiblePosition.deepEquivalent())
+          .build());
 }
 
 bool AXLayoutObject::isValidSelectionBound(const AXObject* boundObject) const {