Convert chrome://policy to new WebUI style

chrome/browser/ui/webui/policy_ui.h

 // Copyright (c) 2012 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_POLICY_UI_H_
 #define CHROME_BROWSER_UI_WEBUI_POLICY_UI_H_
 
 #include <string>
 
 #include "base/basictypes.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/memory/weak_ptr.h"
-#include "base/string16.h"
-#include "base/values.h"
-#include "chrome/browser/policy/policy_map.h"
-#include "chrome/browser/policy/policy_service.h"
 #include "content/public/browser/web_ui_controller.h"
-#include "content/public/browser/web_ui_message_handler.h"
-#include "policy/policy_constants.h"
 
-class CloudPolicyStatusProvider;
+namespace content {
+class WebUI;
+}
 
-// The base class handler of Javascript messages of the about:policy page.
-class PolicyUIHandler : public content::WebUIMessageHandler,
-                        public policy::PolicyService::Observer {
- public:
-  // Keys expected in a DictionaryValue representing the status of a policy.
-  // Public for testing.
-  static const char kLevel[];
-  static const char kName[];
-  static const char kScope[];
-  static const char kSet[];
-  static const char kStatus[];
-  static const char kValue[];
-
-  PolicyUIHandler();
-  virtual ~PolicyUIHandler();
-
-  // WebUIMessageHandler implementation.
-  virtual void RegisterMessages() OVERRIDE;
-
-  // policy::PolicyService::Observer implementation.
-  virtual void OnPolicyUpdated(policy::PolicyDomain domain,
-                               const std::string& component_id,
-                               const policy::PolicyMap& previous,
-                               const policy::PolicyMap& current) OVERRIDE;
-
-  // Returns a ListValue pointer containing the status information of all
-  // policies defined in |policies|. |any_policies_set| is set to true if
-  // there are policies in the list that were valid, otherwise it's false.
-  static scoped_ptr<base::ListValue> GetPolicyStatusList(
-      const policy::PolicyMap& policies,
-      bool* any_policies_set);
-
- private:
-  // Callback for the "requestData" message. The parameter |args| is unused.
-  void HandleRequestData(const base::ListValue* args);
-
-  // Callback for the "fetchPolicy" message. The parameter |args| is unused.
-  void HandleFetchPolicy(const base::ListValue* args);
-
-  // Callback for completion of a RefreshPolicies call.
-  void OnRefreshDone();
-
-  // Sends policy data to UI.
-  void SendDataToUI();
-
-  // Returns the policy service to use.
-  policy::PolicyService* GetPolicyService();
-
-  // Returns a DictionaryValue pointer containing information about the status
-  // of the policy system. The caller acquires ownership of the returned
-  // DictionaryValue pointer.
-  base::DictionaryValue* GetStatusData();
-
-  // Used to post a callback to RefreshPolicies with a WeakPtr to |this|.
-  base::WeakPtrFactory<PolicyUIHandler> weak_factory_;
-
-  // Providers that supply status dictionaries for user and device policy,
-  // respectively. These are created on initialization time as appropriate for
-  // the platform (Chrome OS / desktop) and type of policy that is in effect.
-  scoped_ptr<CloudPolicyStatusProvider> user_status_provider_;
-  scoped_ptr<CloudPolicyStatusProvider> device_status_provider_;
-
-  // The domain the device is enrolled to, if applicable.
-  string16 enterprise_domain_;
-
-  DISALLOW_COPY_AND_ASSIGN(PolicyUIHandler);
-};
-
-// The Web UI handler for about:policy.
+// The Web UI controller for the chrome://policy page.
 class PolicyUI : public content::WebUIController {
  public:
   explicit PolicyUI(content::WebUI* web_ui);
   virtual ~PolicyUI();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(PolicyUI);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_POLICY_UI_H_