[Sync] Port about:sync to DOMUI

chrome/browser/dom_ui/sync_internals_message_handler.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_DOM_UI_SYNC_INTERNALS_MESSAGE_HANDLER_H_
+#define CHROME_BROWSER_DOM_UI_SYNC_INTERNALS_MESSAGE_HANDLER_H_
+#pragma once
+
+#include "base/basictypes.h"
+#include "chrome/browser/dom_ui/dom_ui.h"
+#include "chrome/browser/sync/profile_sync_service_observer.h"
+
+class Profile;
+
+class SyncInternalsMessageHandler : public DOMMessageHandler,
+                                    public ProfileSyncServiceObserver {
+ public:
+  // Does not take ownership of |profile|, which must outlive this
+  // object.
+  explicit SyncInternalsMessageHandler(Profile* profile);
+  virtual ~SyncInternalsMessageHandler();
+
+  // ProfileSyncServiceObserver implementation.
+  virtual void OnStateChanged();
+
+ protected:
+  // DOMMessageHandler implementation.
+  virtual void RegisterMessages();
+
+ private:
+  // Callback handlers.
+  void HandleGetAboutInfo(const ListValue* args);
+
+  Profile* profile_;
+
+  DISALLOW_COPY_AND_ASSIGN(SyncInternalsMessageHandler);
+};
+
+#endif  // CHROME_BROWSER_DOM_UI_SYNC_INTERNALS_MESSAGE_HANDLER_H_