Remove MediaStream label, ended attributes and stop() method

Source/core/frame/UseCounter.cpp

Index: Source/core/frame/UseCounter.cpp
diff --git a/Source/core/frame/UseCounter.cpp b/Source/core/frame/UseCounter.cpp
index d424c4ded75f742fbea4b167454f69649cbe77f2..601898ba6f48c176f8fcac7eaf245b84699d509c 100644
--- a/Source/core/frame/UseCounter.cpp
+++ b/Source/core/frame/UseCounter.cpp
@@ -932,15 +932,6 @@ String UseCounter::deprecationMessage(Feature feature)
     case SVGSMILAnimationInImageRegardlessOfCache:
         return "SVG's SMIL animations (<animate>, <set>, etc.) are deprecated and will be removed. Please use CSS animations or Web animations instead.";
 
-    case MediaStreamLabel:
-        return "'MediaStream.label' is deprecated and will be removed in M47, around November 2015. Please use 'MediaStream.id' instead.";
-
-    case MediaStreamStop:
-        return "'MediaStream.stop()' is deprecated and will be removed in M47, around November 2015. Please use 'MediaStream.active' instead.";
-
-    case MediaStreamEnded:
-        return "'MediaStream.ended' is deprecated and will be removed in M47, around November 2015. Please use 'MediaStream.active' instead.";
-
     case PermissionStatusStatus:
         return "PermissionStatus.status is deprecated and will be removed in M47, around November 2015. Please use PermissionStatus.state instead.";