Use stricter typing for NodeLists throughout the code base

Source/core/dom/shadow/InsertionPoint.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.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 33 matching lines @@
 
     bool hasDistribution() const { return !m_distribution.isEmpty(); }
     void setDistribution(ContentDistribution&);
     void clearDistribution() { m_distribution.clear(); }
     bool isActive() const;
     bool canBeActive() const;
 
     bool isShadowInsertionPoint() const;
     bool isContentInsertionPoint() const;
 
-    PassRefPtrWillBeRawPtr<NodeList> getDistributedNodes();
+    PassRefPtrWillBeRawPtr<StaticNodeList> getDistributedNodes();
 
     virtual bool canAffectSelector() const { return false; }
 
     virtual void attach(const AttachContext& = AttachContext()) OVERRIDE;
     virtual void detach(const AttachContext& = AttachContext()) OVERRIDE;
 
     bool shouldUseFallbackElements() const;
 
     size_t size() const { return m_distribution.size(); }
     Node* at(size_t index)  const { return m_distribution.at(index).get(); }
@@ skipping 45 matching lines @@
     return 0;
 }
 
 const InsertionPoint* resolveReprojection(const Node*);
 
 void collectDestinationInsertionPoints(const Node&, WillBeHeapVector<RawPtrWillBeMember<InsertionPoint>, 8>& results);
 
 } // namespace WebCore
 
 #endif // InsertionPoint_h