ended attribute has been deprecated. Adding usecounter to gather current usage statistics and let u…

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 5b074135fc1ddad58114048fe8739e5407794e9b..40336eaaf318ead1fbaf64971eb82e4f7f8645a8 100644
--- a/Source/core/frame/UseCounter.cpp
+++ b/Source/core/frame/UseCounter.cpp
@@ -788,6 +788,9 @@ String UseCounter::deprecationMessage(Feature feature)
     case PictureSourceSrc:
         return "<source src> with a <picture> parent is invalid and therefore ignored. Please use <source srcset> instead.";
 
+    case MediaStreamEnded:
+        return "The 'ended' attribute is deprecated and may be removed. Please do not use it.";

[Henrik Grunell, 2014/08/27 05:57:30]

I think the deprecation marking and message can be added when we add the
active/inactive attributes. And then have the message say that the meaning of
ended has changed and that active/inactive should be used instead.

In this CL, just add the counter without marking it as deprecated, so that we
get a view of the usage of it.

[Vinod Keshav, 2014/08/27 06:37:11]

Done.

+
     // Features that aren't deprecated don't have a deprecation message.
     default:
         return String();