Add a confirmation prompt to app uninstallation on the ntp.

chrome/browser/dom_ui/app_launcher_handler.h

 // Copyright (c) 2010 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_APP_LAUNCHER_HANDLER_H_
 #define CHROME_BROWSER_DOM_UI_APP_LAUNCHER_HANDLER_H_
 #pragma once
 
+#include "base/scoped_ptr.h"
 #include "chrome/browser/dom_ui/dom_ui.h"
+#include "chrome/browser/extensions/extension_install_ui.h"
 #include "chrome/common/notification_observer.h"
 #include "chrome/common/notification_registrar.h"
 
 class Extension;
 class ExtensionsService;
 
 namespace gfx {
   class Rect;
 }
 
 // The handler for Javascript messages related to the "apps" view.
 class AppLauncherHandler
     : public DOMMessageHandler,
+      public ExtensionInstallUI::Delegate,
       public NotificationObserver {
  public:
   explicit AppLauncherHandler(ExtensionsService* extension_service);
   virtual ~AppLauncherHandler();
 
   // DOMMessageHandler implementation.
   virtual DOMMessageHandler* Attach(DOMUI* dom_ui);
   virtual void RegisterMessages();
 
   // NotificationObserver
   virtual void Observe(NotificationType type,
                       const NotificationSource& source,
                       const NotificationDetails& details);
 
   // Populate a dictionary with the information from an extension.
   static void CreateAppInfo(Extension* extension, DictionaryValue* value);
 
   // Callback for the "getApps" message.
   void HandleGetApps(const ListValue* args);
 
   // Callback for the "launchApp" message.
   void HandleLaunchApp(const ListValue* args);
 
   // Callback for the "uninstallApp" message.
   void HandleUninstallApp(const ListValue* args);
 
  private:
+  // ExtensionInstallUI::Delegate implementation, used for receiving
+  // notification about uninstall confirmation dialog selections.
+  virtual void InstallUIProceed(bool create_app_shortcut);
+  virtual void InstallUIAbort();
+
+  // Returns the ExtensionInstallUI object for this class, creating it if
+  // needed.
+  ExtensionInstallUI* GetExtensionInstallUI();
+
   // Starts the animation of the app icon.
   void AnimateAppIcon(Extension* extension, const gfx::Rect& rect);
 
   // The apps are represented in the extensions model.
   scoped_refptr<ExtensionsService> extensions_service_;
 
   // We monitor changes to the extension system so that we can reload the apps
   // when necessary.
   NotificationRegistrar registrar_;
 
+  // Used to show confirmation UI for uninstalling/enabling extensions in
+  // incognito mode.
+  scoped_ptr<ExtensionInstallUI> install_ui_;
+
+  // The id of the extension we are prompting the user about.
+  std::string extension_id_prompting_;
+
   DISALLOW_COPY_AND_ASSIGN(AppLauncherHandler);
 };
 
 #endif  // CHROME_BROWSER_DOM_UI_APP_LAUNCHER_HANDLER_H_