Remove the ENABLE_XSLT compile-time flag.

Source/WebCore/dom/TransformSource.h

 /*
  * Copyright (C) 2009 Jakub Wieczorek <faw217@gmail.com>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #ifndef TransformSource_h
 #define TransformSource_h
 
-#if ENABLE(XSLT)
-
 #include <wtf/FastAllocBase.h>
 #include <wtf/Forward.h>
 #include <wtf/Noncopyable.h>
 #include <wtf/text/WTFString.h>
 
 namespace WebCore {
 
 #if USE(QXMLQUERY)
     typedef String PlatformTransformSource;
 #else
     typedef void* PlatformTransformSource;
 #endif
 
     class TransformSource {
         WTF_MAKE_NONCOPYABLE(TransformSource); WTF_MAKE_FAST_ALLOCATED;
     public:
         explicit TransformSource(const PlatformTransformSource&);
         ~TransformSource();
 
         PlatformTransformSource platformSource() const { return m_source; }
 
     private:
         PlatformTransformSource m_source;
     };
 
 } // namespace WebCore
 
-#endif
-
 #endif // TransformSource_h