Move custom element code to core/dom/custom/

Source/core/dom/Microtask.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:
  *
  * 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
@@ skipping 13 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * 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 "core/dom/Microtask.h"
 
-#include "core/dom/CustomElementCallbackDispatcher.h"
 #include "core/dom/MutationObserver.h"
+#include "core/dom/custom/CustomElementCallbackDispatcher.h"
 #include "wtf/Vector.h"
 
 namespace WebCore {
 
 void Microtask::performCheckpoint()
 {
     static bool performingCheckpoint = false;
     if (performingCheckpoint)
         return;
     performingCheckpoint = true;
 
     bool anyWorkDone;
     do {
         MutationObserver::deliverAllMutations();
         anyWorkDone = CustomElementCallbackDispatcher::instance().dispatch();
     } while (anyWorkDone);
 
     performingCheckpoint = false;
 }
 
 } // namespace WebCore