Implement sidebar support for extension action popups

chrome/browser/ui/cocoa/browser_window_cocoa.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_COCOA_BROWSER_WINDOW_COCOA_H_
 #define CHROME_BROWSER_UI_COCOA_BROWSER_WINDOW_COCOA_H_
 
 #include "base/mac/scoped_nsobject.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/extensions/extension_keybinding_registry.h"
@@ skipping 18 matching lines @@
 }
 
 // An implementation of BrowserWindow for Cocoa. Bridges between C++ and
 // the Cocoa NSWindow. Cross-platform code will interact with this object when
 // it needs to manipulate the window.
 
 class BrowserWindowCocoa
     : public BrowserWindow,
       public ExclusiveAccessContext,
       public extensions::ExtensionKeybindingRegistry::Delegate,
+      public content::NotificationObserver,
       public SearchModelObserver {
  public:
   BrowserWindowCocoa(Browser* browser,
                      BrowserWindowController* controller);
   ~BrowserWindowCocoa() override;
 
   // Overridden from BrowserWindow
   void Show() override;
   void ShowInactive() override;
   void Hide() override;
@@ skipping 101 matching lines @@
   FindBar* CreateFindBar() override;
   web_modal::WebContentsModalDialogHost* GetWebContentsModalDialogHost()
       override;
   void ShowAvatarBubbleFromAvatarButton(
       AvatarBubbleMode mode,
       const signin::ManageAccountsParams& manage_accounts_params) override;
   void CloseAvatarBubbleFromAvatarButton() override;
   int GetRenderViewHeightInsetWithDetachedBookmarkBar() override;
   void ExecuteExtensionCommand(const extensions::Extension* extension,
                                const extensions::Command& command) override;
+  // content::NotificationObserver overrides:
+  void Observe(int type,
+               const content::NotificationSource& source,
+               const content::NotificationDetails& details) override;
+
   ExclusiveAccessContext* GetExclusiveAccessContext() override;
 
   // ExclusiveAccessContext interface
   Profile* GetProfile() override;
   content::WebContents* GetActiveWebContents() override;
   void UnhideDownloadShelf() override;
   void HideDownloadShelf() override;
 
   // Overridden from ExtensionKeybindingRegistry::Delegate:
   extensions::ActiveTabPermissionGranter* GetActiveTabPermissionGranter()
       override;
 
   // Overridden from SearchModelObserver:
   void ModelChanged(const SearchModel::State& old_state,
                     const SearchModel::State& new_state) override;
 
   // Adds the given FindBar cocoa controller to this browser window.
   void AddFindBar(FindBarCocoaController* find_bar_cocoa_controller);
 
   // Returns the cocoa-world BrowserWindowController
   BrowserWindowController* cocoa_controller() { return controller_; }
 
  protected:
   void DestroyBrowser() override;
 
  private:
   NSWindow* window() const;  // Accessor for the (current) |NSWindow|.
-
+  void UpdateSidebarForContents(content::WebContents* tab_contents);
+  content::NotificationRegistrar registrar_;
   Browser* browser_;  // weak, owned by controller
   BrowserWindowController* controller_;  // weak, owns us
   base::scoped_nsobject<NSString> pending_window_title_;
   ui::WindowShowState initial_show_state_;
   NSInteger attention_request_id_;  // identifier from requestUserAttention
 };
 
 #endif  // CHROME_BROWSER_UI_COCOA_BROWSER_WINDOW_COCOA_H_