Remove integrity attribute from elements not in SRI spec

Source/core/html/HTMLMediaElement.idl

 /*
  * Copyright (C) 2007, 2010, 2011, 2012 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 72 matching lines @@
     [RaisesException=Setter] attribute double volume;
     attribute boolean muted;
     [Reflect=muted] attribute boolean defaultMuted;
 
     // tracks
     [SameObject, RuntimeEnabled=AudioVideoTracks] readonly attribute AudioTrackList audioTracks;
     [SameObject, RuntimeEnabled=AudioVideoTracks] readonly attribute VideoTrackList videoTracks;
     [SameObject] readonly attribute TextTrackList textTracks;
     [RaisesException] TextTrack addTextTrack(TextTrackKind kind, optional DOMString label = "", optional DOMString language = "");
 
-    // Subresource Integrity
-    // http://w3c.github.io/webappsec/specs/subresourceintegrity/
-    // FIXME: The spec does not extend HTMLAnchorElement.
-    [Reflect, RuntimeEnabled=SubresourceIntegrity] attribute DOMString integrity;
-
     // Non-standard APIs
     [RuntimeEnabled=PrefixedEncryptedMedia, DeprecateAs=CanPlayTypeKeySystem] DOMString canPlayType(DOMString type, [TreatUndefinedAs=NullString] DOMString? keySystem);
     // The number of bytes consumed by the media decoder.
     [MeasureAs=PrefixedAudioDecodedByteCount] readonly attribute unsigned long webkitAudioDecodedByteCount;
     [MeasureAs=PrefixedVideoDecodedByteCount] readonly attribute unsigned long webkitVideoDecodedByteCount;
 };