Change condition for adding AX_STATE_EXPANDED

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 088e6e5a968239e99bc049841575ecd161be68d5..85805688499cbd5325740136d76023fbbba2569a 100644
--- a/content/browser/accessibility/browser_accessibility_cocoa.mm
+++ b/content/browser/accessibility/browser_accessibility_cocoa.mm
@@ -69,6 +69,7 @@ NSDictionary* attributeToMethodNameMap = nil;
     { NSAccessibilityDisclosureLevelAttribute, @"disclosureLevel" },
     { NSAccessibilityDisclosedRowsAttribute, @"disclosedRows" },
     { NSAccessibilityEnabledAttribute, @"enabled" },
+    { NSAccessibilityExpandedAttribute, @"expanded" },
     { NSAccessibilityFocusedAttribute, @"focused" },
     { NSAccessibilityHeaderAttribute, @"header" },
     { NSAccessibilityHelpAttribute, @"help" },
@@ -329,6 +330,11 @@ NSDictionary* attributeToMethodNameMap = nil;
       GetState(browserAccessibility_, ui::AX_STATE_ENABLED)];
 }
 
+- (NSNumber*)expanded {
+  return [NSNumber numberWithBool:
+      GetState(browserAccessibility_, ui::AX_STATE_EXPANDED)];
+}
+
 - (NSNumber*)focused {
   BrowserAccessibilityManager* manager = browserAccessibility_->manager();
   NSNumber* ret = [NSNumber numberWithBool:
@@ -1176,6 +1182,7 @@ NSDictionary* attributeToMethodNameMap = nil;
       NSAccessibilityChildrenAttribute,
       NSAccessibilityDescriptionAttribute,
       NSAccessibilityEnabledAttribute,
+      NSAccessibilityExpandedAttribute,
       NSAccessibilityFocusedAttribute,
       NSAccessibilityHelpAttribute,
       NSAccessibilityLinkedUIElementsAttribute,