Fix stability and data racing issues, coalesce more updates for JumpList

chrome/browser/win/jumplist_factory.h

 // Copyright 2016 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_WIN_JUMPLIST_FACTORY_H_
 #define CHROME_BROWSER_WIN_JUMPLIST_FACTORY_H_
 
 #include "base/memory/singleton.h"
-#include "chrome/browser/win/jumplist.h"
-#include "components/keyed_service/content/refcounted_browser_context_keyed_service_factory.h"
+#include "components/keyed_service/content/browser_context_keyed_service_factory.h"
 
-class JumpListFactory : public RefcountedBrowserContextKeyedServiceFactory {
+class Profile;
+class JumpList;
+
+class JumpListFactory : public BrowserContextKeyedServiceFactory {
  public:
-  static scoped_refptr<JumpList> GetForProfile(Profile* profile);
+  static JumpList* GetForProfile(Profile* profile);
 
   static JumpListFactory* GetInstance();
 
  private:
   friend struct base::DefaultSingletonTraits<JumpListFactory>;
   JumpListFactory();
   ~JumpListFactory() override;
 
   // BrowserContextKeyedServiceFactory:
-  scoped_refptr<RefcountedKeyedService> BuildServiceInstanceFor(
+  KeyedService* BuildServiceInstanceFor(
       content::BrowserContext* context) const override;
 };
 
 #endif  // CHROME_BROWSER_WIN_JUMPLIST_FACTORY_H_