| Index: Source/core/frame/UseCounter.h | 
| diff --git a/Source/core/frame/UseCounter.h b/Source/core/frame/UseCounter.h | 
| index 99a1216b21fe7b42216f62483b6c394f09183de8..abb5251ff4b43eb2787c3a8a1cc9e161389474da 100644 | 
| --- a/Source/core/frame/UseCounter.h | 
| +++ b/Source/core/frame/UseCounter.h | 
| @@ -312,6 +312,8 @@ public: | 
| SVGDocumentRootElement, | 
| DocumentCreateEventOptionalArgument, | 
| MediaErrorEncrypted, | 
| +        EventSourceURL, | 
| +        WebSocketURL, | 
| // Add new features immediately above this line. Don't change assigned | 
| // numbers of any item, and don't reuse removed slots. | 
| NumberOfFeatures, // This enum value must be last. | 
|  |