[Extensions Toolbar] Fix action pop out bug and views animation

chrome/browser/ui/views/toolbar/browser_actions_container.h

 // Copyright 2013 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_VIEWS_TOOLBAR_BROWSER_ACTIONS_CONTAINER_H_
 #define CHROME_BROWSER_UI_VIEWS_TOOLBAR_BROWSER_ACTIONS_CONTAINER_H_
 
 #include "base/observer_list.h"
 #include "chrome/browser/extensions/extension_keybinding_registry.h"
 #include "chrome/browser/ui/toolbar/toolbar_actions_bar.h"
 #include "chrome/browser/ui/toolbar/toolbar_actions_bar_delegate.h"
 #include "chrome/browser/ui/views/extensions/extension_keybinding_registry_views.h"
 #include "chrome/browser/ui/views/toolbar/chevron_menu_button.h"
 #include "chrome/browser/ui/views/toolbar/toolbar_action_view.h"
 #include "ui/gfx/animation/animation_delegate.h"
 #include "ui/gfx/animation/slide_animation.h"
 #include "ui/gfx/animation/tween.h"
 #include "ui/views/controls/resize_area_delegate.h"
 #include "ui/views/drag_controller.h"
 #include "ui/views/view.h"
 #include "ui/views/widget/widget_observer.h"
 
-class BrowserActionsContainerObserver;
 class ExtensionPopup;
 
 namespace extensions {
 class ActiveTabPermissionGranter;
 class Command;
 class Extension;
 }
 
 namespace views {
 class BubbleDelegateView;
@@ skipping 154 matching lines @@
 
   // Executes |command| registered by |extension|.
   void ExecuteExtensionCommand(const extensions::Extension* extension,
                                const extensions::Command& command);
 
   // Returns the preferred width given the limit of |max_width|. (Unlike most
   // views, since we don't want to show part of an icon or a large space after
   // the omnibox, this is probably *not* |max_width|).
   int GetWidthForMaxWidth(int max_width) const;
 
-  // Add or remove an observer.
-  void AddObserver(BrowserActionsContainerObserver* observer);
-  void RemoveObserver(BrowserActionsContainerObserver* observer);
-
   // Overridden from views::View:
   gfx::Size GetPreferredSize() const override;
   int GetHeightForWidth(int width) const override;
   gfx::Size GetMinimumSize() const override;
   void Layout() override;
   void OnMouseEntered(const ui::MouseEvent& event) override;
   bool GetDropFormats(
       int* formats,
       std::set<ui::Clipboard::FormatType>* format_types) override;
   bool AreDropTypesRequired() override;
@@ skipping 136 matching lines @@
   // The DropPosition for the current drag-and-drop operation, or NULL if there
   // is none.
   scoped_ptr<DropPosition> drop_position_;
 
   // The class that registers for keyboard shortcuts for extension commands.
   scoped_ptr<ExtensionKeybindingRegistryViews> extension_keybinding_registry_;
 
   // The extension bubble that is actively showing, if any.
   views::BubbleDelegateView* active_bubble_;
 
-  base::ObserverList<BrowserActionsContainerObserver> observers_;
-
   DISALLOW_COPY_AND_ASSIGN(BrowserActionsContainer);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_TOOLBAR_BROWSER_ACTIONS_CONTAINER_H_