Implement sidebar support for extension action popups

extensions/browser/extension_system.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 EXTENSIONS_BROWSER_EXTENSION_SYSTEM_H_
 #define EXTENSIONS_BROWSER_EXTENSION_SYSTEM_H_
 
 #include <string>
 
 #include "base/memory/ref_counted.h"
@@ skipping 20 matching lines @@
 
 class ContentVerifier;
 class Extension;
 class ExtensionSet;
 class InfoMap;
 class ManagementPolicy;
 class OneShotEvent;
 class QuotaService;
 class RuntimeData;
 class SharedUserScriptMaster;
+class SidebarManager;
 class StateStore;
 
 // ExtensionSystem manages the lifetime of many of the services used by the
 // extensions and apps system, and it handles startup and shutdown as needed.
 // Eventually, we'd like to make more of these services into KeyedServices in
 // their own right.
 class ExtensionSystem : public KeyedService {
  public:
   ExtensionSystem();
   ~ExtensionSystem() override;
@@ skipping 53 matching lines @@
   virtual const OneShotEvent& ready() const = 0;
 
   // Returns the content verifier, if any.
   virtual ContentVerifier* content_verifier() = 0;
 
   // Get a set of extensions that depend on the given extension.
   // TODO(elijahtaylor): Move SharedModuleService out of chrome/browser
   // so it can be retrieved from ExtensionSystem directly.
   virtual scoped_ptr<ExtensionSet> GetDependentExtensions(
       const Extension* extension) = 0;
+
+  virtual SidebarManager* sidebar_manager();
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_EXTENSION_SYSTEM_H_