Fix broken AttachContext from r152289

Source/core/dom/shadow/ElementShadow.h

 /*
  * 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 40 matching lines @@
         removeAllShadowRoots();
     }
 
     Element* host() const;
     ShadowRoot* youngestShadowRoot() const { return m_shadowRoots.head(); }
     ShadowRoot* oldestShadowRoot() const { return m_shadowRoots.tail(); }
     ElementShadow* containingShadow() const;
 
     ShadowRoot* addShadowRoot(Element* shadowHost, ShadowRoot::ShadowRootType);
 
-    void attach();
-    void detach();
+    void attach(const Node::AttachContext& = Node::AttachContext());
+    void detach(const Node::AttachContext& = Node::AttachContext());

[esprehn, 2013/06/14 22:25:27]

I don't think you need the default values. We should never call this without
passing the host's attach context.

 
     bool childNeedsStyleRecalc() const;
     bool needsStyleRecalc() const;
     void recalcStyle(Node::StyleChange);
     void removeAllEventListeners();
 
     void invalidateDistribution() { m_distributor.invalidateDistribution(host()); }
     void didAffectSelector(AffectedSelectorMask mask) { m_distributor.didAffectSelector(host(), mask); }
     void willAffectSelector() { m_distributor.willAffectSelector(host()); }
 
@@ skipping 49 matching lines @@
     if (Node* parent = node->parentNode())
         if (parent->isElementNode())
             return toElement(parent)->shadow();
     return 0;
 }
 
 
 } // namespace
 
 #endif