FBTF: Move virtual methods to implementation files.

app/tree_node_model.h

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef APP_TREE_NODE_MODEL_H_
 #define APP_TREE_NODE_MODEL_H_
 #pragma once
 
 #include <algorithm>
 #include <vector>
 
 #include "app/tree_model.h"
 #include "base/basictypes.h"
+#include "base/logging.h"
 #include "base/observer_list.h"
 #include "base/scoped_ptr.h"
 #include "base/scoped_vector.h"
 #include "base/stl_util-inl.h"
 #include "base/string16.h"
 
 // TreeNodeModel and TreeNodes provide an implementation of TreeModel around
 // TreeNodes. TreeNodes form a directed acyclic graph.
 //
 // TreeNodes own their children, so that deleting a node deletes all
@@ skipping 281 matching lines @@
  private:
   // The observers.
   ObserverList<TreeModelObserver> observer_list_;
   // The root.
   scoped_ptr<NodeType> root_;
 
   DISALLOW_COPY_AND_ASSIGN(TreeNodeModel);
 };
 
 #endif  // APP_TREE_NODE_MODEL_H_