Implements determineAccessibilityRole() instead of roleValue()

Source/modules/accessibility/AXListBox.cpp

Index: Source/modules/accessibility/AXListBox.cpp
diff --git a/Source/modules/accessibility/AXListBox.cpp b/Source/modules/accessibility/AXListBox.cpp
index 615f58677ab7af62afa945ad3dcc3a46e579e5fa..6c13c63b5f82f37e59a184b14eba5d1154540833 100644
--- a/Source/modules/accessibility/AXListBox.cpp
+++ b/Source/modules/accessibility/AXListBox.cpp
@@ -55,11 +55,11 @@ PassRefPtr<AXListBox> AXListBox::create(LayoutObject* layoutObject, AXObjectCach
     return adoptRef(new AXListBox(layoutObject, axObjectCache));
 }
 
-AccessibilityRole AXListBox::roleValue() const
+AccessibilityRole AXListBox::determineAccessibilityRole()
 {
-    AccessibilityRole ariaRole = ariaRoleAttribute();
-    if (ariaRole != UnknownRole)
-        return ariaRole;
+    if ((m_ariaRole = determineAriaRoleAttribute()) != UnknownRole)
+        return m_ariaRole;
+
     return ListBoxRole;
 }