According to W3C specifications, http://www.w3.org/TR/mediacapture-streams/#navigatorusermedia, NavigatorUserMedia IDL should support getUserMedia/webkitGetUserMedia attributes instead of NavigatorMediaStream.
Created attachment 231139 [details]
Patch includes all code modifications to replace 'NavigatorMediaStream' with 'NavigatoreUserMedia' as suggested in W3C specifications.
Comment on attachment 231139 [details]
Clearing flags on attachment: 231139
Committed r168576: <http://trac.webkit.org/changeset/168576>
All reviewed patches have been landed. Closing bug.