1 files changed, 10 insertions, 0 deletions
diff --git a/Source/WebCore/svg/properties/SVGListPropertyTearOff.h b/Source/WebCore/svg/properties/SVGListPropertyTearOff.h
index 415df822b..c3bba4be1 100644
--- a/Source/WebCore/svg/properties/SVGListPropertyTearOff.h
+++ b/Source/WebCore/svg/properties/SVGListPropertyTearOff.h
@@ -37,6 +37,7 @@ public:
     typedef SVGAnimatedListPropertyTearOff<PropertyType> AnimatedListPropertyTearOff;
     typedef typename SVGAnimatedListPropertyTearOff<PropertyType>::ListWrapperCache ListWrapperCache;
 
+    using Base::m_role;
     using Base::m_values;
     using Base::m_wrappers;
 
@@ -115,6 +116,15 @@ protected:
     {
     }
 
+    virtual bool isReadOnly() const
+    {
+        if (m_role == AnimValRole)
+            return true;
+        if (m_animatedProperty && m_animatedProperty->isReadOnly())
+            return true;
+        return false;
+    }
+
     virtual void commitChange()
     {
         ASSERT(m_values);