[sync] Add hooks to allow for testing sync credential caching in the presence of strange singleton …

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();
 
+  // Returns true if |profile| uses the "Default" directory, and false if not.
+  static bool IsDefaultProfile(Profile* profile);
+
+  // Returns true if |profile| uses the "Default" directory in the alternate
+  // user data directory, and false if not. Used only for testing.
+  static bool IsDefaultAlternateProfileForTest(Profile* profile);
+
  private:
   friend struct DefaultSingletonTraits<CredentialCacheServiceFactory>;
 
   CredentialCacheServiceFactory();
 
   virtual ~CredentialCacheServiceFactory();
 
-  // Returns true if |profile| uses the "Default" directory, and false if not.
-  static bool IsDefaultProfile(Profile* profile);
-
   // ProfileKeyedServiceFactory implementation.
   virtual bool ServiceIsCreatedWithProfile() OVERRIDE;
 
   // ProfileKeyedServiceFactory implementation.
   virtual ProfileKeyedService* BuildServiceInstanceFor(
       Profile* profile) const OVERRIDE;
 };
 
 }  // namespace syncer
 
 #endif  // CHROME_BROWSER_SYNC_CREDENTIAL_CACHE_SERVICE_FACTORY_WIN_H_