Test aria-pressed=mixed on windows

content/browser/accessibility/browser_accessibility_cocoa.mm

Index: content/browser/accessibility/browser_accessibility_cocoa.mm
diff --git a/content/browser/accessibility/browser_accessibility_cocoa.mm b/content/browser/accessibility/browser_accessibility_cocoa.mm
index c0985ddbcc3c6f6431a42cdcf79007cf8b56b62c..0906968a1c29b7136d8327a072fc693e8b39f7b6 100644
--- a/content/browser/accessibility/browser_accessibility_cocoa.mm
+++ b/content/browser/accessibility/browser_accessibility_cocoa.mm
@@ -1368,17 +1368,13 @@ NSString* const NSAccessibilityRequiredAttribute = @"AXRequired";
           ui::AX_ATTR_CANVAS_HAS_FALLBACK)) {
     return NSAccessibilityGroupRole;
   }
-  if (role == ui::AX_ROLE_BUTTON || role == ui::AX_ROLE_TOGGLE_BUTTON) {
-    bool isAriaPressedDefined;
-    bool isMixed;
-    browserAccessibility_->GetAriaTristate("aria-pressed",
-                                           &isAriaPressedDefined,
-                                           &isMixed);
-    if (isAriaPressedDefined)
-      return NSAccessibilityCheckBoxRole;
-    else
-      return NSAccessibilityButtonRole;
-  }
+
+  // TODO do we need these 2 lines? A basic role mapping should do it:
+  // if (role == ui::AX_ROLE_BUTTON)
+  //  return NSAccessibilityButtonRole;
+  // if (role == ui::AX_ROLE_TOGGLE_BUTTON)
+  //  return NSAccessibilityCheckBoxRole;
+
   if ((browserAccessibility_->IsSimpleTextControl() &&
        browserAccessibility_->HasState(ui::AX_STATE_MULTILINE)) ||
       browserAccessibility_->IsRichTextControl()) {
@@ -1871,23 +1867,26 @@ NSString* const NSAccessibilityRequiredAttribute = @"AXRequired";
     // AXValue does not make sense for pure buttons.
     return @"";
   } else if ([self internalRole] == ui::AX_ROLE_TOGGLE_BUTTON) {
-    int value = 0;
-    bool isAriaPressedDefined;
-    bool isMixed;
-    value = browserAccessibility_->GetAriaTristate(
-        "aria-pressed", &isAriaPressedDefined, &isMixed) ? 1 : 0;
-
-    if (isMixed)
-      value = 2;
-
+    const auto pressedState = static_cast<ui::AXButtonState>(
+        browserAccessibility_->GetIntAttribute(ui::AX_ATTR_PRESSED_STATE));
+    switch (pressedState) {
+      case ui::AX_BUTTON_STATE_TRUE:
+        value = 1;
+        break;
+      case ui::AX_BUTTON_STATE_MIXED:
+        value = 2;
+        break;
+      default:
+        value = 0;
+        break;
+    }
     return [NSNumber numberWithInt:value];
-
   } else if ([role isEqualToString:NSAccessibilityCheckBoxRole] ||
              [role isEqualToString:NSAccessibilityRadioButtonRole] ||
              [self internalRole] == ui::AX_ROLE_MENU_ITEM_CHECK_BOX ||
              [self internalRole] == ui::AX_ROLE_MENU_ITEM_RADIO) {
     int value;
-    const auto checkedState = static_cast<ui::AXCheckedState>(
+    const auto checkedState = static_cast<ui::AXButtonState>(
         browserAccessibility_->GetIntAttribute(ui::AX_ATTR_CHECKED_STATE));
     switch (checkedState) {
       case ui::AX_CHECKED_STATE_TRUE: