Converting the Cookies options page from a TableView to a TreeView...

app/tree_node_model.h

 // Copyright (c) 2006-2008 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_
 
 #include <algorithm>
 #include <vector>
 
@@ skipping 91 matching lines @@
   // Returns the number of children.
   int GetChildCount() const {
     return static_cast<int>(children_->size());
   }
 
   // Returns the number of all nodes in teh subtree rooted at this node,
   // including this node.
   int GetTotalNodeCount() const {
     int count = 1;  // Start with one to include the node itself.
     for (size_t i = 0; i < children_->size(); ++i) {
-      TreeNode<NodeType>* child = children_[i];
+      const TreeNode<NodeType>* child = children_[i];
       count += child->GetTotalNodeCount();
     }
     return count;
   }
 
   // Returns a child by index.
   NodeType* GetChild(int index) {
     DCHECK(index >= 0 && index < GetChildCount());
     return children_[index];
   }
@@ skipping 115 matching lines @@
     DCHECK(parent);
     return AsNode(parent)->GetChild(index);
   }
 
   virtual TreeModelNode* GetParent(TreeModelNode* node) {
     DCHECK(node);
     return AsNode(node)->GetParent();
   }
 
   NodeType* AsNode(TreeModelNode* model_node) {
-    return reinterpret_cast<NodeType*>(model_node);
+    return static_cast<NodeType*>(model_node);
   }
 
   // Sets the title of the specified node.
   virtual void SetTitle(TreeModelNode* node,
                         const std::wstring& title) {
     DCHECK(node);
     AsNode(node)->SetTitle(title);
     NotifyObserverTreeNodeChanged(node);
   }
 
@@ skipping 29 matching lines @@
   // The root.
   scoped_ptr<NodeType> root_;
 
   // The observer.
   TreeModelObserver* observer_;
 
   DISALLOW_COPY_AND_ASSIGN(TreeNodeModel);
 };
 
 #endif  // APP_TREE_NODE_MODEL_H_