Implement sidebar support for extension action popups

chrome/browser/extensions/extension_system_impl.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_EXTENSIONS_EXTENSION_SYSTEM_IMPL_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_SYSTEM_IMPL_H_
 
 #include "base/memory/scoped_vector.h"
 #include "extensions/browser/extension_system.h"
 #include "extensions/common/one_shot_event.h"
 
 class DeclarativeUserScriptManager;
 class Profile;
 
 namespace extensions {
 
 class ContentVerifier;
 class ExtensionSystemSharedFactory;
 class InstallVerifier;
 class NavigationObserver;
 class SharedUserScriptMaster;
 class StateStoreNotificationObserver;
+// class SidebarManager;
 
 // The ExtensionSystem for ProfileImpl and OffTheRecordProfileImpl.
 // Implementation details: non-shared services are owned by
 // ExtensionSystemImpl, a KeyedService with separate incognito
 // instances. A private Shared class (also a KeyedService,
 // but with a shared instance for incognito) keeps the common services.
 class ExtensionSystemImpl : public ExtensionSystem {
  public:
   explicit ExtensionSystemImpl(Profile* profile);
   ~ExtensionSystemImpl() override;
@@ skipping 18 matching lines @@
 
   void UnregisterExtensionWithRequestContexts(
       const std::string& extension_id,
       const UnloadedExtensionInfo::Reason reason) override;
 
   const OneShotEvent& ready() const override;
   ContentVerifier* content_verifier() override;  // shared
   scoped_ptr<ExtensionSet> GetDependentExtensions(
       const Extension* extension) override;
 
+  SidebarManager* sidebar_manager() override;
+  void CreateSidebarManager();
+
  private:
   friend class ExtensionSystemSharedFactory;
 
   // Owns the Extension-related systems that have a single instance
   // shared between normal and incognito profiles.
   class Shared : public KeyedService {
    public:
     explicit Shared(Profile* profile);
     ~Shared() override;
 
@@ skipping 50 matching lines @@
         device_local_account_management_policy_provider_;
 #endif
 
     OneShotEvent ready_;
   };
 
   Profile* profile_;
 
   Shared* shared_;
 
+  scoped_refptr<SidebarManager> sidebar_manager_;
+
   DISALLOW_COPY_AND_ASSIGN(ExtensionSystemImpl);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_SYSTEM_IMPL_H_