Get rid of redundant parameter PositionIsOffsetInAnchor from PositionAlgorithm constructor

Source/modules/accessibility/AXLayoutObject.cpp

Index: Source/modules/accessibility/AXLayoutObject.cpp
diff --git a/Source/modules/accessibility/AXLayoutObject.cpp b/Source/modules/accessibility/AXLayoutObject.cpp
index 1d0564acb34df125560efc3e34a5c7654acad84e..30b8ca914fc5e02f0f15348905b534bbceb16ab4 100644
--- a/Source/modules/accessibility/AXLayoutObject.cpp
+++ b/Source/modules/accessibility/AXLayoutObject.cpp
@@ -1872,8 +1872,8 @@ void AXLayoutObject::setSelectedTextRange(const PlainTextRange& range)
     if (!frame)
         return;
     Node* node = m_layoutObject->node();
-    frame->selection().setSelection(VisibleSelection(Position(node, range.start, Position::PositionIsOffsetInAnchor),
-        Position(node, range.start + range.length, Position::PositionIsOffsetInAnchor), DOWNSTREAM));
+    frame->selection().setSelection(VisibleSelection(Position(node, range.start),
+        Position(node, range.start + range.length), DOWNSTREAM));
 }
 
 void AXLayoutObject::setValue(const String& string)
@@ -2005,7 +2005,7 @@ VisiblePosition AXLayoutObject::visiblePositionForIndex(int index) const
 
     CharacterIterator it(start, end);
     it.advance(index - 1);
-    return VisiblePosition(Position(it.currentContainer(), it.endOffset(), Position::PositionIsOffsetInAnchor), UPSTREAM);
+    return VisiblePosition(Position(it.currentContainer(), it.endOffset()), UPSTREAM);
 }
 
 int AXLayoutObject::indexForVisiblePosition(const VisiblePosition& pos) const