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diff --git a/chromium/chrome/browser/signin/about_signin_internals_factory.h b/chromium/chrome/browser/signin/about_signin_internals_factory.h
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+++ b/chromium/chrome/browser/signin/about_signin_internals_factory.h
@@ -0,0 +1,40 @@
+// 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_SIGNIN_ABOUT_SIGNIN_INTERNALS_FACTORY_H_
+#define CHROME_BROWSER_SIGNIN_ABOUT_SIGNIN_INTERNALS_FACTORY_H_
+
+#include "base/memory/singleton.h"
+#include "components/keyed_service/content/browser_context_keyed_service_factory.h"
+
+class AboutSigninInternals;
+class Profile;
+
+// Singleton that owns all AboutSigninInternals and associates them with
+// Profiles.
+class AboutSigninInternalsFactory : public BrowserContextKeyedServiceFactory {
+ public:
+  // Returns the instance of AboutSigninInternals associated with this profile,
+  // creating one if none exists.
+  static AboutSigninInternals* GetForProfile(Profile* profile);
+
+  // Returns an instance of the AboutSigninInternalsFactory singleton.
+  static AboutSigninInternalsFactory* GetInstance();
+
+  // Implementation of BrowserContextKeyedServiceFactory.
+  void RegisterProfilePrefs(
+      user_prefs::PrefRegistrySyncable* registry) override;
+
+ private:
+  friend struct base::DefaultSingletonTraits<AboutSigninInternalsFactory>;
+
+  AboutSigninInternalsFactory();
+  ~AboutSigninInternalsFactory() override;
+
+  // BrowserContextKeyedServiceFactory
+  KeyedService* BuildServiceInstanceFor(
+      content::BrowserContext* context) const override;
+};
+
+#endif  // CHROME_BROWSER_SIGNIN_ABOUT_SIGNIN_INTERNALS_FACTORY_H_