Extensions-related fixups for scoped_refptr conversion operator removal.

chrome/browser/extensions/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_EXTENSION_SERVICE_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_SERVICE_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 317 matching lines @@
   // need to be exposed in the UI. Set |is_from_sync| to true if the
   // install was initiated via sync.
   void PromoteEphemeralApp(
       const extensions::Extension* extension, bool is_from_sync);
 
   // ExtensionHost of background page calls this method right after its render
   // view has been created.
   void DidCreateRenderViewForBackgroundPage(extensions::ExtensionHost* host);
 
   // Changes sequenced task runner for crx installation tasks to |task_runner|.
-  void SetFileTaskRunnerForTesting(base::SequencedTaskRunner* task_runner);
+  void SetFileTaskRunnerForTesting(
+      const scoped_refptr<base::SequencedTaskRunner>& task_runner);
 
   // Postpone installations so that we don't have to worry about race
   // conditions.
   void OnGarbageCollectIsolatedStorageStart();
 
   // Restart any extension installs which were delayed for isolated storage
   // garbage collection.
   void OnGarbageCollectIsolatedStorageFinished();
 
   // Record a histogram using the PermissionMessage enum values for each
@@ skipping 377 matching lines @@
                            GreylistedExtensionDisabled);
   FRIEND_TEST_ALL_PREFIXES(ExtensionServiceTest,
                            GreylistDontEnableManuallyDisabled);
   FRIEND_TEST_ALL_PREFIXES(ExtensionServiceTest,
                            GreylistUnknownDontChange);
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionService);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_SERVICE_H_