Use stricter typing for NodeLists throughout the code base

Source/core/events/NodeEventContext.h

 /*
  * Copyright (C) 2014 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 17 matching lines @@
 #define NodeEventContext_h
 
 #include "core/events/TreeScopeEventContext.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefPtr.h"
 
 namespace WebCore {
 
 class EventTarget;
 class Node;
-class NodeList;
 class TouchEventContext;
 
 class NodeEventContext {
     ALLOW_ONLY_INLINE_ALLOCATION();
 public:
     // FIXME: Use ContainerNode instead of Node.
     NodeEventContext(PassRefPtrWillBeRawPtr<Node>, PassRefPtrWillBeRawPtr<EventTarget> currentTarget);
     ~NodeEventContext();
     void trace(Visitor*);
 
@@ skipping 13 matching lines @@
     RefPtrWillBeMember<Node> m_node;
     RefPtrWillBeMember<EventTarget> m_currentTarget;
     RefPtrWillBeMember<TreeScopeEventContext> m_treeScopeEventContext;
 };
 
 }
 
 WTF_ALLOW_MOVE_INIT_AND_COMPARE_WITH_MEM_FUNCTIONS(WebCore::NodeEventContext);
 
 #endif // NodeEventContext_h