Make [TypeChecking=Interface] the default

third_party/WebKit/Source/core/svg/SVGAnimatedEnumeration.idl

 /*
  * Copyright (C) 2006 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 10 matching lines @@
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 // http://www.w3.org/TR/SVG2/types.html#InterfaceSVGAnimatedEnumeration
 
 [
     ImplementedAs=SVGAnimatedEnumerationBase,
     SetWrapperReferenceTo(SVGElement contextElement),
-    TypeChecking=Interface,
     RuntimeEnabled=SVG1DOM,
     MeasureAs=SVG1DOM,
     WillBeGarbageCollected,
 ] interface SVGAnimatedEnumeration {
     [RaisesException=Setter] attribute unsigned short baseVal;
     readonly attribute unsigned short animVal;
 };