| Index: Source/core/frame/UseCounter.cpp | 
| diff --git a/Source/core/frame/UseCounter.cpp b/Source/core/frame/UseCounter.cpp | 
| index 91eeae06346da37f909bfe589f84942849756010..3906073a9c29a73236fa74eaf865847bfa8d7dab 100644 | 
| --- a/Source/core/frame/UseCounter.cpp | 
| +++ b/Source/core/frame/UseCounter.cpp | 
| @@ -686,9 +686,6 @@ String UseCounter::deprecationMessage(Feature feature) | 
| case PrefixedMediaSourceOpen: | 
| return "'WebKitMediaSource' is deprecated. Please use 'MediaSource' instead."; | 
|  | 
| -    case DOMImplementationCreateCSSStyleSheet: | 
| -        return "'DOMImplementation.createCSSStyleSheet()' is deprecated."; | 
| - | 
| case MediaErrorEncrypted: | 
| return "'MediaError.MEDIA_ERR_ENCRYPTED' is deprecated. This error code is never used."; | 
|  | 
|  |