[oilpan] Rename visit to mark.

Source/core/dom/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 98 matching lines @@
 {
     for (ShadowRoot* root = youngestShadowRoot(); root; root = root->olderShadowRoot()) {
         for (Node* node = root; node; node = NodeTraversal::next(node)) {
             node->removeAllEventListeners();
         }
     }
 }
 
 void ElementShadow::trace(Visitor* visitor)
 {
-    visitor->visit(m_shadowRoots.head());
+    visitor->mark(m_shadowRoots.head());
     visitor->trace(m_distributor);
 }
 
 void ElementShadow::reportMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
 {
     MemoryClassInfo info(memoryObjectInfo, this, WebCoreMemoryTypes::DOM);
     info.addMember(m_shadowRoots, "shadowRoots");
     ShadowRoot* shadowRoot = m_shadowRoots.head();
     while (shadowRoot) {
         info.addMember(shadowRoot, "shadowRoot");
         shadowRoot = shadowRoot->next();
     }
     info.addMember(m_distributor, "distributor");
 }
 
 } // namespace