[sync] Automatic bootstrapping of Sync on Win 8 from cached credentials

chrome/browser/sync/credential_cache_service_factory_win.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_SYNC_CREDENTIAL_CACHE_SERVICE_FACTORY_WIN_H_
+#define CHROME_BROWSER_SYNC_CREDENTIAL_CACHE_SERVICE_FACTORY_WIN_H_
+
+#include "base/compiler_specific.h"
+#include "base/memory/singleton.h"
+#include "chrome/browser/profiles/profile_keyed_service_factory.h"
+
+class Profile;
+
+namespace syncer {
+
+class CredentialCacheService;
+
+class CredentialCacheServiceFactory : public ProfileKeyedServiceFactory {
+ public:
+  static syncer::CredentialCacheService* GetForProfile(Profile* profile);
+
+  static CredentialCacheServiceFactory* GetInstance();
+
+ private:
+  friend struct DefaultSingletonTraits<CredentialCacheServiceFactory>;
+
+  CredentialCacheServiceFactory();
+
+  virtual ~CredentialCacheServiceFactory();
+
+  // ProfileKeyedServiceFactory implementation.
+  virtual ProfileKeyedService* BuildServiceInstanceFor(
+      Profile* profile) const OVERRIDE;
+};
+
+}  // namespace syncer
+
+#endif  // CHROME_BROWSER_SYNC_CREDENTIAL_CACHE_SERVICE_FACTORY_WIN_H_