Test aria-pressed=mixed on windows

third_party/WebKit/Source/modules/accessibility/AXNodeObject.h

 /*
  * Copyright (C) 2012, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 113 matching lines @@
   bool IsRichlyEditable() const override;
   bool IsSlider() const override;
   bool IsNativeSlider() const override;
   bool IsMoveableSplitter() const override;
 
   // Check object state.
   bool IsClickable() const final;
   bool IsEnabled() const override;
   AccessibilityExpanded IsExpanded() const override;
   bool IsModal() const final;
-  bool IsPressed() const final;
+  AccessibilityButtonState PressedState() const;
   bool IsReadOnly() const override;
   bool IsRequired() const final;
 
   // Check whether certain properties can be modified.
   bool CanSetFocusAttribute() const override;
   bool CanSetValueAttribute() const override;
   bool CanSetSelectedAttribute() const override;
 
   // Properties of static elements.
   RGBA32 ColorValue() const final;
@@ skipping 95 matching lines @@
                                NameSources*,
                                bool* found_text_alternative) const;
   float StepValueForRange() const;
   bool IsDescendantOfElementType(HashSet<QualifiedName>& tag_names) const;
   String PlaceholderFromNativeAttribute() const;
 };
 
 }  // namespace blink
 
 #endif  // AXNodeObject_h