WTF/std normalization: replace WTF::Vector::first() with ::front()

third_party/WebKit/Source/core/dom/shadow/DistributedNodes.h

 /*
  * Copyright (C) 2013 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 25 matching lines @@
 #include "wtf/Vector.h"
 
 namespace blink {
 
 class DistributedNodes final {
   DISALLOW_NEW();
 
  public:
   DistributedNodes() {}
 
-  Node* first() const { return m_nodes.first(); }
+  Node* first() const { return m_nodes.front(); }
   Node* last() const { return m_nodes.back(); }
   Node* at(size_t index) const { return m_nodes.at(index); }
 
   size_t size() const { return m_nodes.size(); }
   bool isEmpty() const { return m_nodes.isEmpty(); }
 
   void append(Node*);
   void clear() {
     m_nodes.clear();
     m_indices.clear();
@@ skipping 10 matching lines @@
   DECLARE_TRACE();
 
  private:
   HeapVector<Member<Node>> m_nodes;
   HeapHashMap<Member<const Node>, size_t> m_indices;
 };
 
 }  // namespace blink
 
 #endif