Test aria-pressed=mixed on windows

ui/views/controls/button/toggle_button.cc

Index: ui/views/controls/button/toggle_button.cc
diff --git a/ui/views/controls/button/toggle_button.cc b/ui/views/controls/button/toggle_button.cc
index e2ef935946e853ba0cafc4fe936ae0861bfd739e..d421e032285490b46781f16485597d340dbc62db 100644
--- a/ui/views/controls/button/toggle_button.cc
+++ b/ui/views/controls/button/toggle_button.cc
@@ -233,8 +233,8 @@ void ToggleButton::GetAccessibleNodeData(ui::AXNodeData* node_data) {
   CustomButton::GetAccessibleNodeData(node_data);
 
   node_data->role = ui::AX_ROLE_SWITCH;
-  const ui::AXCheckedState checked_state =
-      is_on_ ? ui::AX_CHECKED_STATE_TRUE : ui::AX_CHECKED_STATE_FALSE;
+  const ui::AXButtonState checked_state =
+      is_on_ ? ui::AX_BUTTON_STATE_TRUE : ui::AX_BUTTON_STATE_FALSE;
   node_data->AddIntAttribute(ui::AX_ATTR_CHECKED_STATE, checked_state);
 }