Revert of Remove V8RecrusionScope, cleanup call sites.

third_party/WebKit/Source/core/dom/MutationObserver.cpp

 /*
  * Copyright (C) 2011 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 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 "core/dom/MutationObserver.h"
 
 #include "bindings/core/v8/ExceptionState.h"
-#include "bindings/core/v8/Microtask.h"
 #include "core/dom/ExceptionCode.h"
+#include "core/dom/Microtask.h"
 #include "core/dom/MutationCallback.h"
 #include "core/dom/MutationObserverInit.h"
 #include "core/dom/MutationObserverRegistration.h"
 #include "core/dom/MutationRecord.h"
 #include "core/dom/Node.h"
 #include "core/inspector/InspectorInstrumentation.h"
 #include "wtf/MainThread.h"
 #include <algorithm>
 
 namespace blink {
@@ skipping 226 matching lines @@
 {
 #if ENABLE(OILPAN)
     visitor->trace(m_callback);
     visitor->trace(m_records);
     visitor->trace(m_registrations);
     visitor->trace(m_callback);
 #endif
 }
 
 } // namespace blink