| Index: Source/core/frame/UseCounter.cpp | 
| diff --git a/Source/core/frame/UseCounter.cpp b/Source/core/frame/UseCounter.cpp | 
| index 4448fcf00f03774c024530a9c71c49002ca4a0ef..68020738328fdf4884953ddf646a287c22e13be0 100644 | 
| --- a/Source/core/frame/UseCounter.cpp | 
| +++ b/Source/core/frame/UseCounter.cpp | 
| @@ -909,6 +909,9 @@ String UseCounter::deprecationMessage(Feature feature) | 
| case FullscreenInsecureOrigin: | 
| return "requestFullscreen() will be deprecated over insecure origins in the future. You should consider switching your application to a secure origin, such as HTTPS. See https://goo.gl/rStTGz for more details."; | 
|  | 
| +    case EncryptedMediaInsecureOrigin: | 
| +        return "requestMediaKeySystemAccess() is deprecated on insecure origins in the specification. Support will be removed in the future. You should consider switching your application to a secure origin, such as HTTPS. See https://goo.gl/rStTGz for more details."; | 
| + | 
| case PushSubscriptionId: | 
| return "'PushSubscription.subscriptionId' is deprecated and is now included in 'PushSubscription.endpoint'. It will be removed in Chrome 45, around August 2015."; | 
|  | 
|  |