Implement sidebar support for extension action popups

chrome/browser/ui/toolbar/toolbar_action_view_controller.h

 // Copyright 2014 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_ACTION_VIEW_CONTROLLER_H_
 #define CHROME_BROWSER_UI_TOOLBAR_TOOLBAR_ACTION_VIEW_CONTROLLER_H_
 
 #include "base/strings/string16.h"
 #include "ui/gfx/image/image.h"
 
@@ skipping 50 matching lines @@
   // Returns true if the action wants to run, and should be popped out of the
   // overflow menu on the given |web_contents|.
   virtual bool WantsToRun(content::WebContents* web_contents) const = 0;
 
   // Returns true if the action has a popup for the given |web_contents|.
   virtual bool HasPopup(content::WebContents* web_contents) const = 0;
 
   // Hides the current popup, if one is visible.
   virtual void HidePopup() = 0;
 
+  // Hides the current sidebar, if one is visible.
+  virtual void HideSidebar() {}
+
   // Returns the native view for the popup, if one is active.
   virtual gfx::NativeView GetPopupNativeView() = 0;
 
   // Returns the context menu model, or null if no context menu should be shown.
   virtual ui::MenuModel* GetContextMenu() = 0;
 
   // Called when a context menu has closed so the controller can perform any
   // necessary cleanup.
   virtual void OnContextMenuClosed() {}
 
@@ skipping 18 matching lines @@
                           content::WebContents* web_contents) const {
   }
 
   // Registers an accelerator. Called when the view is added to the hierarchy.
   // Unregistering any commands is the responsibility of the controller.
   virtual void RegisterCommand() {
   }
 };
 
 #endif  // CHROME_BROWSER_UI_TOOLBAR_TOOLBAR_ACTION_VIEW_CONTROLLER_H_