Move WebUIMessageHandler to its own file in the public directory and put it in the content namesp...

chrome/browser/ui/webui/ntp/recently_closed_tabs_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_UI_WEBUI_NTP_RECENTLY_CLOSED_TABS_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_NTP_RECENTLY_CLOSED_TABS_HANDLER_H_
 
 #include "base/values.h"
 #include "chrome/browser/sessions/tab_restore_service.h"
 #include "chrome/browser/sessions/tab_restore_service_observer.h"
-#include "content/browser/webui/web_ui.h"
+#include "content/public/browser/web_ui_message_handler.h"
 
 class TabRestoreService;
 
-class RecentlyClosedTabsHandler : public WebUIMessageHandler,
+class RecentlyClosedTabsHandler : public content::WebUIMessageHandler,
                                   public TabRestoreServiceObserver {
  public:
   RecentlyClosedTabsHandler() : tab_restore_service_(NULL) {}
   virtual ~RecentlyClosedTabsHandler();
 
   // WebUIMessageHandler implementation.
   virtual void RegisterMessages() OVERRIDE;
 
   // Callback for the "reopenTab" message. Rewrites the history of the
   // currently displayed tab to be the one in TabRestoreService with a
@@ skipping 19 matching lines @@
       base::ListValue* entry_list_value);
 
  private:
   // TabRestoreService that we are observing.
   TabRestoreService* tab_restore_service_;
 
   DISALLOW_COPY_AND_ASSIGN(RecentlyClosedTabsHandler);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_NTP_RECENTLY_CLOSED_TABS_HANDLER_H_