Remove use of deprecated base::ListValue::Append(Value*) overload in extensions.

chrome/browser/extensions/api/tabs/app_window_controller.h

 // Copyright 2015 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_EXTENSIONS_API_TABS_APP_WINDOW_CONTROLLER_H_
 #define CHROME_BROWSER_EXTENSIONS_API_TABS_APP_WINDOW_CONTROLLER_H_
 
 #include <string>
 
 #include "base/containers/scoped_ptr_hash_map.h"
@@ skipping 13 matching lines @@
   AppWindowController(AppWindow* window,
                       std::unique_ptr<AppBaseWindow> base_window,
                       Profile* profile);
   ~AppWindowController() override;
 
   // extensions::WindowController:
   int GetWindowId() const override;
   std::string GetWindowTypeText() const override;
   std::unique_ptr<base::DictionaryValue> CreateWindowValueWithTabs(
       const Extension* extension) const override;
-  base::DictionaryValue* CreateTabValue(const Extension* extension,
-                                        int tab_index) const override;
   std::unique_ptr<api::tabs::Tab> CreateTabObject(
       const extensions::Extension* extension,
       int tab_index) const override;
 
   bool CanClose(Reason* reason) const override;
   void SetFullscreenMode(bool is_fullscreen,
                          const GURL& extension_url) const override;
   Browser* GetBrowser() const override;
   bool IsVisibleToExtension(const Extension* extension) const override;
 
  private:
   AppWindow* app_window_;  // Owns us.
   std::unique_ptr<AppBaseWindow> base_window_;
 
   DISALLOW_COPY_AND_ASSIGN(AppWindowController);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_TABS_APP_WINDOW_CONTROLLER_H_