Use correct position when setting pos_in_set for tabs.

ui/views/controls/table/table_view.cc

Index: ui/views/controls/table/table_view.cc
diff --git a/ui/views/controls/table/table_view.cc b/ui/views/controls/table/table_view.cc
index ab17e37d723aad00bee65cb576e12a2cc833c984..d747e021259f2288a9b15bff894581c2b3f3e8ab 100644
--- a/ui/views/controls/table/table_view.cc
+++ b/ui/views/controls/table/table_view.cc
@@ -443,8 +443,8 @@ void TableView::GetAccessibleNodeData(ui::AXNodeData* node_data) {
     // Get information about the active item, this is not the same as the set
     // of selected items (of which there could be more than one).
     node_data->role = ui::AX_ROLE_ROW;
-    node_data->AddIntAttribute(ui::AX_ATTR_POS_IN_SET,
-                               selection_model_.active());
+    node_data->AddValidatedIntAttribute(ui::AX_ATTR_INDEX_IN_SET,
+                                        selection_model_.active());
     if (selection_model_.IsSelected(selection_model_.active())) {
       node_data->AddStateFlag(ui::AX_STATE_SELECTED);
     }