Move cookies tree model helper code into cookies_tree_model_util.

chrome/browser/ui/webui/cookies_tree_model_util.h

+// Copyright (c) 2011 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 CHROME_BROWSER_UI_WEBUI_COOKIES_TREE_MODEL_UTIL_H_
+#define CHROME_BROWSER_UI_WEBUI_COOKIES_TREE_MODEL_UTIL_H_
+#pragma once
+
+#include <string>
+
+class CookieTreeNode;
+class DictionaryValue;
+class ListValue;
+
+namespace cookies_tree_model_util {
+
+// Returns tree node id. Currently use hex string of node pointer as id.
+std::string GetTreeNodeId(CookieTreeNode* node);
+
+// Populate given |dict| with cookie tree node properties.
+void GetCookieTreeNodeDictionary(const CookieTreeNode& node,
+                                 DictionaryValue* dict);
+
+// Append the children nodes of |parent| in specified range to |nodes| list.
+void GetChildNodeList(CookieTreeNode* parent, int start, int count,
+                      ListValue* nodes);
+
+// Gets tree node from |path| under |root|. Return NULL if |path| is not valid.
+CookieTreeNode* GetTreeNodeFromPath(CookieTreeNode* root,
+                                    const std::string& path);
+
+}  // namespace cookies_tree_model_util
+
+#endif  // CHROME_BROWSER_UI_WEBUI_COOKIES_TREE_MODEL_UTIL_H_