Moved JsonPrefStore to use SequencedWorkerPool

chrome/test/base/testing_profile.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_TEST_BASE_TESTING_PROFILE_H_
 #define CHROME_TEST_BASE_TESTING_PROFILE_H_
 
 #include <string>
 
 #include "base/memory/ref_counted.h"
@@ skipping 160 matching lines @@
   // This is NOT invoked from CreateHistoryService.
   void BlockUntilHistoryIndexIsRefreshed();
 
   // Blocks until TopSites finishes loading.
   void BlockUntilTopSitesLoaded();
 
   TestingPrefService* GetTestingPrefService();
 
   // content::BrowserContext
   virtual FilePath GetPath() OVERRIDE;
+  virtual scoped_refptr<base::SequencedTaskRunner> GetIOTaskRunner() OVERRIDE;
   virtual bool IsOffTheRecord() const OVERRIDE;
   virtual content::DownloadManagerDelegate*
       GetDownloadManagerDelegate() OVERRIDE;
   // Returns a testing ContextGetter (if one has been created via
   // CreateRequestContext) or NULL. This is not done on-demand for two reasons:
   // (1) Some tests depend on GetRequestContext() returning NULL. (2) Because
   // of the special memory management considerations for the
   // TestURLRequestContextGetter class, many tests would find themseleves
   // leaking if they called this method without the necessary IO thread. This
   // getter is currently only capable of returning a Context that helps test
@@ skipping 175 matching lines @@
   // testing.
   ProfileDependencyManager* profile_dependency_manager_;
 
   scoped_ptr<content::MockResourceContext> resource_context_;
 
   // Weak pointer to a delegate for indicating that a profile was created.
   Delegate* delegate_;
 };
 
 #endif  // CHROME_TEST_BASE_TESTING_PROFILE_H_