Test aria-pressed=mixed on windows

ui/accessibility/platform/ax_platform_node_auralinux.cc

Index: ui/accessibility/platform/ax_platform_node_auralinux.cc
diff --git a/ui/accessibility/platform/ax_platform_node_auralinux.cc b/ui/accessibility/platform/ax_platform_node_auralinux.cc
index 85a6ec09a0d8410e145b0807ec812f166730b4fd..3666bbcb6012fe83a7c501e068eafb2eef7c039d 100644
--- a/ui/accessibility/platform/ax_platform_node_auralinux.cc
+++ b/ui/accessibility/platform/ax_platform_node_auralinux.cc
@@ -476,27 +476,38 @@ void AXPlatformNodeAuraLinux::GetAtkState(AtkStateSet* atk_state_set) {
     atk_state_set_add_state(atk_state_set, ATK_STATE_EXPANDED);
   if (data.HasState(ui::AX_STATE_FOCUSABLE))
     atk_state_set_add_state(atk_state_set, ATK_STATE_FOCUSABLE);
-  if (data.HasState(ui::AX_STATE_PRESSED))
-    atk_state_set_add_state(atk_state_set, ATK_STATE_PRESSED);
   if (data.HasState(ui::AX_STATE_SELECTABLE))
     atk_state_set_add_state(atk_state_set, ATK_STATE_SELECTABLE);
   if (data.HasState(ui::AX_STATE_SELECTED))
     atk_state_set_add_state(atk_state_set, ATK_STATE_SELECTED);
 
   // Checked state
-  const auto checked_state = static_cast<ui::AXCheckedState>(
+  const auto checked_state = static_cast<ui::AXButtonState>(
       GetIntAttribute(ui::AX_ATTR_CHECKED_STATE));
   switch (checked_state) {
-    case ui::AX_CHECKED_STATE_MIXED:
+    case ui::AX_BUTTON_STATE_MIXED:
       atk_state_set_add_state(atk_state_set, ATK_STATE_INDETERMINATE);
       break;
-    case ui::AX_CHECKED_STATE_TRUE:
+    case ui::AX_BUTTON_STATE_TRUE:
       atk_state_set_add_state(atk_state_set, ATK_STATE_CHECKED);
       break;
     default:
       break;
   }
 
+  // Checked state
+  const auto pressed_state = static_cast<ui::AXButtonState>(
+      GetIntAttribute(ui::AX_ATTR_PRESSED_STATE));
+  switch (pressed_state) {
+    case ui::AX_BUTTON_STATE_MIXED:
+      atk_state_set_add_state(atk_state_set, ATK_STATE_INDETERMINATE);
+      break;
+    case ui::AX_BUTTON_STATE_TRUE:
+      atk_state_set_add_state(atk_state_set, ATK_STATE_PRESSED);
+      break;
+    default:
+      break;
+  }
   if (delegate_->GetFocus() == GetNativeViewAccessible())
     atk_state_set_add_state(atk_state_set, ATK_STATE_FOCUSED);
 }