[Extenisons UI] Remove extension_action_redesign logic from the toolbar

chrome/browser/ui/toolbar/toolbar_actions_model.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_TOOLBAR_TOOLBAR_ACTIONS_MODEL_H_
 #define CHROME_BROWSER_UI_TOOLBAR_TOOLBAR_ACTIONS_MODEL_H_
 
 #include <stddef.h>
 
 #include "base/compiler_specific.h"
@@ skipping 207 matching lines @@
                            extensions::UnloadedExtensionReason reason) override;
   void OnExtensionUninstalled(content::BrowserContext* browser_context,
                               const extensions::Extension* extension,
                               extensions::UninstallReason reason) override;
 
   // ExtensionActionAPI::Observer:
   void OnExtensionActionUpdated(
       ExtensionAction* extension_action,
       content::WebContents* web_contents,
       content::BrowserContext* browser_context) override;
-  void OnExtensionActionVisibilityChanged(const std::string& extension_id,
-                                          bool is_now_visible) override;
 
   // To be called after the extension service is ready; gets loaded extensions
   // from the ExtensionRegistry, their saved order from the pref service, and
   // the initial set of component actions from the
   // ComponentToolbarActionsFactory, and constructs |toolbar_items_| from these
   // data. IncognitoPopulate() takes the shortcut - looking at the regular
   // model's content and modifying it.
   void InitializeActionList();
   void Populate();
   void IncognitoPopulate();
@@ skipping 52 matching lines @@
   extensions::ExtensionRegistry* extension_registry_;
 
   // The ExtensionActionManager, cached for convenience.
   extensions::ExtensionActionManager* extension_action_manager_;
 
   std::unique_ptr<ComponentToolbarActionsFactory> component_actions_factory_;
 
   // True if we've handled the initial EXTENSIONS_READY notification.
   bool actions_initialized_;
 
-  // If true, we include all actions in the toolbar model.
-  bool use_redesign_;
-
   // Ordered list of browser actions.
   std::vector<ToolbarItem> toolbar_items_;
 
   // List of browser actions which should be highlighted.
   std::vector<ToolbarItem> highlighted_items_;
 
   // The current type of highlight (with HIGHLIGHT_NONE indicating no current
   // highlight).
   HighlightType highlight_type_;
 
@@ skipping 24 matching lines @@
   // For observing change of toolbar order preference by external entity (sync).
   PrefChangeRegistrar pref_change_registrar_;
   base::Closure pref_change_callback_;
 
   base::WeakPtrFactory<ToolbarActionsModel> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ToolbarActionsModel);
 };
 
 #endif  // CHROME_BROWSER_UI_TOOLBAR_TOOLBAR_ACTIONS_MODEL_H_