Test aria-pressed=mixed on windows

ui/views/controls/button/toggle_button.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/views/controls/button/toggle_button.h"
 
 #include "cc/paint/paint_flags.h"
 #include "third_party/skia/include/core/SkDrawLooper.h"
 #include "ui/accessibility/ax_node_data.h"
 #include "ui/gfx/canvas.h"
@@ skipping 215 matching lines @@
 }
 
 void ToggleButton::OnNativeThemeChanged(const ui::NativeTheme* theme) {
   SchedulePaint();
 }
 
 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);
 }
 
 void ToggleButton::NotifyClick(const ui::Event& event) {
   SetIsOn(!is_on(), true);
   CustomButton::NotifyClick(event);
 }
 
 void ToggleButton::AddInkDropLayer(ui::Layer* ink_drop_layer) {
   thumb_view_->AddInkDropLayer(ink_drop_layer);
@@ skipping 25 matching lines @@
     // TODO(varkha, estade): The thumb is using its own view. Investigate if
     // repainting in every animation step to update colors could be avoided.
     UpdateThumb();
     SchedulePaint();
     return;
   }
   CustomButton::AnimationProgressed(animation);
 }
 
 }  // namespace views