Move custom element code to core/dom/custom/

Source/web/WebCustomElement.cpp

 /*
  * Copyright (C) 2013 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 15 matching lines @@
  * THEORY 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.
  */
 
 #include "config.h"
 #include "WebCustomElement.h"
 
 #include "../platform/WebString.h"
 #include "RuntimeEnabledFeatures.h"
-#include "core/dom/CustomElement.h"
+#include "core/dom/custom/CustomElement.h"
 
 using namespace WebCore;
 
 namespace WebKit {
 
 void WebCustomElement::addEmbedderCustomElementName(const WebString& name)
 {
     ASSERT(RuntimeEnabledFeatures::embedderCustomElementsEnabled());
     CustomElement::addEmbedderCustomElementName(name);
 }
 
 } // namespace WebKit