[Extensions Toolbar] Move some popup logic to be platform-agnostic

chrome/browser/ui/views/location_bar/page_action_image_view.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_VIEWS_LOCATION_BAR_PAGE_ACTION_IMAGE_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_PAGE_ACTION_IMAGE_VIEW_H_
 
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 52 matching lines @@
   // ToolbarActionViewDelegateViews:
   void UpdateState() override;
   views::View* GetAsView() override;
   bool IsShownInMenu() override;
   views::FocusManager* GetFocusManagerForAccelerator() override;
   views::Widget* GetParentForContextMenu() override;
   ToolbarActionViewController* GetPreferredPopupViewController() override;
   views::View* GetReferenceViewForPopup() override;
   views::MenuButton* GetContextMenuButton() override;
   content::WebContents* GetCurrentWebContents() const override;
-  void HideActivePopup() override;
 
   // The controller for this ExtensionAction view.
   scoped_ptr<ExtensionActionViewController> view_controller_;
 
   // The location bar view that owns us.
   LocationBarView* owner_;
 
   // The string to show for a tooltip;
   std::string tooltip_;
 
   // This is used for post-install visual feedback. The page_action icon is
   // briefly shown even if it hasn't been enabled by its extension.
   bool preview_enabled_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(PageActionImageView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_PAGE_ACTION_IMAGE_VIEW_H_