Remove V8-specific extended attributes from IDL files
https://bugs.webkit.org/show_bug.cgi?id=114523

Reviewed by Geoffrey Garen.

No tests because no behavior change is expected.

* Modules/encryptedmedia/MediaKeyMessageEvent.idl:
* Modules/encryptedmedia/MediaKeyNeededEvent.idl:
* Modules/encryptedmedia/MediaKeySession.idl:
* Modules/encryptedmedia/MediaKeys.idl:
* Modules/filesystem/HTMLInputElementFileSystem.idl:
* Modules/indexeddb/IDBAny.idl:
* Modules/mediasource/MediaSource.idl:
* Modules/mediasource/SourceBuffer.idl:
* Modules/mediasource/SourceBufferList.idl:
* Modules/mediastream/MediaStream.idl:
* Modules/webaudio/AudioDestinationNode.idl:
* html/track/TextTrackCue.idl:
* html/track/TextTrackCueList.idl:
* html/track/TextTrackList.idl:
* html/track/TextTrackRegion.idl:
* html/track/TextTrackRegionList.idl:
* html/track/TrackEvent.idl:
* storage/Storage.idl:
* svg/SVGDocument.idl:
* svg/SVGElement.idl:
* workers/WorkerContext.idl:
* xml/XMLHttpRequest.idl:
* xml/XPathNSResolver.idl:



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@148480 268f45cc-cd09-0410-ab3c-d52691b4dbfc