| Index: Source/modules/webaudio/PannerNode.cpp | 
| diff --git a/Source/modules/webaudio/PannerNode.cpp b/Source/modules/webaudio/PannerNode.cpp | 
| index b4279c9567eb9897f98d206d81e4b94745153993..91723a65c911dee5bc0ca3589a514f4b2b922b34 100644 | 
| --- a/Source/modules/webaudio/PannerNode.cpp | 
| +++ b/Source/modules/webaudio/PannerNode.cpp | 
| @@ -556,6 +556,12 @@ void PannerNode::updateCachedSourceLocationInfo() | 
| m_cachedVelocity = m_velocity; | 
| } | 
|  | 
| +void PannerNode::trace(Visitor* visitor) | 
| +{ | 
| +    visitor->trace(m_cachedListener); | 
| +    AudioNode::trace(visitor); | 
| +} | 
| + | 
| } // namespace WebCore | 
|  | 
| #endif // ENABLE(WEB_AUDIO) | 
|  |