AX checked state changes

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 cd3859970f56aff129662d3ddfcd503ad8d60a15..0e2909c246e5116a2cc3fd55e7143fd678cc3418 100644
--- a/content/browser/accessibility/browser_accessibility_cocoa.mm
+++ b/content/browser/accessibility/browser_accessibility_cocoa.mm
@@ -1874,16 +1874,22 @@ NSString* const NSAccessibilityRequiredAttribute = @"AXRequired";
              [role isEqualToString:NSAccessibilityRadioButtonRole] ||
              [self internalRole] == ui::AX_ROLE_MENU_ITEM_CHECK_BOX ||
              [self internalRole] == ui::AX_ROLE_MENU_ITEM_RADIO) {
-    int value = 0;
-    value = GetState(
-        browserAccessibility_, ui::AX_STATE_CHECKED) ? 1 : 0;
-    value = GetState(
-        browserAccessibility_, ui::AX_STATE_SELECTED) ?
-            1 :
-            value;
-
-    if (browserAccessibility_->GetBoolAttribute(ui::AX_ATTR_STATE_MIXED)) {
-      value = 2;
+    int value;
+    const int checkedState = browserAccessibility_->GetIntAttribute(
+        ui::AX_ATTR_CHECKED_STATE);
+    switch(checkedState) {
+      case AX_CHECKED_STATE_TRUE:
+        value = 1;
+        break;
+      case AX_CHECKED_STATE_MIXED:
+        value = 2;
+        break;
+      default:
+        value = GetState(
+          browserAccessibility_, ui::AX_STATE_SELECTED) ?
+              1 :
+              0;
+        break;
     }
     return [NSNumber numberWithInt:value];
   } else if ([role isEqualToString:NSAccessibilityProgressIndicatorRole] ||