Get rid of redundant parameter PositionIsOffsetInAnchor from PositionAlgorithm constructor

Source/core/editing/EditingTestBase.cpp

Index: Source/core/editing/EditingTestBase.cpp
diff --git a/Source/core/editing/EditingTestBase.cpp b/Source/core/editing/EditingTestBase.cpp
index 16226f71cc9dbf615a8d5fbf6aebba5c93c3301c..5994be53756a25d5d8fb489fcebed5efe53fa2db 100644
--- a/Source/core/editing/EditingTestBase.cpp
+++ b/Source/core/editing/EditingTestBase.cpp
@@ -58,12 +58,12 @@ void EditingTestBase::updateLayoutAndStyleForPainting()
 
 Position EditingTestBase::positionInDOMTree(Node& anchor, int offset)
 {
-    return Position(&anchor, offset, Position::PositionIsOffsetInAnchor);
+    return Position(&anchor, offset);
 }
 
 PositionInComposedTree EditingTestBase::positionInComposedTree(Node& anchor, int offset)
 {
-    return PositionInComposedTree(&anchor, offset, PositionInComposedTree::PositionIsOffsetInAnchor);
+    return PositionInComposedTree(&anchor, offset);
 }
 
 } // namespace blink