Allow autoupdate to update disabled extensions.

chrome/browser/extensions/test_extension_service.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_EXTENSIONS_TEST_EXTENSION_SERVICE_H_
 #define CHROME_BROWSER_EXTENSIONS_TEST_EXTENSION_SERVICE_H_
 #pragma once
 
 #include <string>
 #include <vector>
 
 #include "chrome/browser/extensions/extension_service.h"
 
 class CrxInstaller;
 
 // Implemention of ExtensionServiceInterface with default
 // implementations for methods that add failures.  You should subclass
 // this and override the methods you care about.
 class TestExtensionService : public ExtensionServiceInterface {
  public:
   virtual ~TestExtensionService();
 
   // ExtensionServiceInterface implementation.
   virtual const ExtensionSet* extensions() const OVERRIDE;
+  virtual const ExtensionSet* disabled_extensions() const OVERRIDE;
   virtual PendingExtensionManager* pending_extension_manager() OVERRIDE;
 
   virtual bool UpdateExtension(
       const std::string& id,
       const FilePath& path,
       const GURL& download_url,
       CrxInstaller** out_crx_installer) OVERRIDE;
   virtual const Extension* GetExtensionById(
       const std::string& id, bool include_disabled) const OVERRIDE;
   virtual const Extension* GetInstalledExtension(
@@ skipping 21 matching lines @@
   virtual bool is_ready() OVERRIDE;
 
   virtual bool AddExtension(const Extension* extension) OVERRIDE;
 
   virtual void UnloadExtension(
       const std::string& extension_id,
       extension_misc::UnloadedExtensionReason reason) OVERRIDE;
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_TEST_EXTENSION_SERVICE_H_