Test aria-pressed=mixed on windows

ash/system/tray/hover_highlight_view.cc

Index: ash/system/tray/hover_highlight_view.cc
diff --git a/ash/system/tray/hover_highlight_view.cc b/ash/system/tray/hover_highlight_view.cc
index 4a28ebde54633957b66ba0aee963acfadbe4fc87..c939c0c87e5b8ddfb8d2837d0b7c77314a1ddaab 100644
--- a/ash/system/tray/hover_highlight_view.cc
+++ b/ash/system/tray/hover_highlight_view.cc
@@ -196,12 +196,12 @@ bool HoverHighlightView::PerformAction(const ui::Event& event) {
 void HoverHighlightView::GetAccessibleNodeData(ui::AXNodeData* node_data) {
   ActionableView::GetAccessibleNodeData(node_data);
 
-  ui::AXCheckedState checked_state;
+  ui::AXButtonState checked_state;
 
   if (accessibility_state_ == AccessibilityState::CHECKED_CHECKBOX)
-    checked_state = ui::AX_CHECKED_STATE_TRUE;
+    checked_state = ui::AX_BUTTON_STATE_TRUE;
   else if (accessibility_state_ == AccessibilityState::UNCHECKED_CHECKBOX)
-    checked_state = ui::AX_CHECKED_STATE_FALSE;
+    checked_state = ui::AX_BUTTON_STATE_FALSE;
   else
     return;  // Not a checkbox