Oilpan: fix build after r364654.

third_party/WebKit/Source/core/dom/shadow/ElementShadow.cpp

 /*
  * Copyright (C) 2012 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.
  *     * Neither the name of Google Inc. nor the names of its
@@ skipping 315 matching lines @@
         }
         if (ElementShadow* shadow = shadowWhereNodeCanBeDistributed(*shadowInsertionPoint))
             shadow->setNeedsDistributionRecalc();
     }
     InspectorInstrumentation::didPerformElementShadowDistribution(host());
 }
 
 void ElementShadow::distributeV1()
 {
     if (!m_slotAssignment)
-        m_slotAssignment = adoptPtr(new SlotAssignment());
+        m_slotAssignment = SlotAssignment::create();
     m_slotAssignment->resolveAssignment(youngestShadowRoot());
 }
 
 void ElementShadow::didDistributeNode(const Node* node, InsertionPoint* insertionPoint)
 {
 #if ENABLE(OILPAN)
     NodeToDestinationInsertionPoints::AddResult result = m_nodeToInsertionPoints.add(node, nullptr);
     if (result.isNewEntry)
         result.storedValue->value = adoptPtrWillBeNoop(new DestinationInsertionPoints());
     result.storedValue->value->append(insertionPoint);
@@ skipping 50 matching lines @@
 
 DEFINE_TRACE(ElementShadow)
 {
 #if ENABLE(OILPAN)
     visitor->trace(m_nodeToInsertionPoints);
     visitor->trace(m_selectFeatures);
     // Shadow roots are linked with previous and next pointers which are traced.
     // It is therefore enough to trace one of the shadow roots here and the
     // rest will be traced from there.
     visitor->trace(m_shadowRoots.head());
+    visitor->trace(m_slotAssignment);
 #endif
 }
 
 } // namespace