[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

Index: chrome/browser/sync/credential_cache_service_factory_win.h
diff --git a/chrome/browser/sync/credential_cache_service_factory_win.h b/chrome/browser/sync/credential_cache_service_factory_win.h
index c5cff712d417d581989f5b139adf36c2f7d55244..f284af2d1c63ef8d4f5ce346318f83ff178f3129 100644
--- a/chrome/browser/sync/credential_cache_service_factory_win.h
+++ b/chrome/browser/sync/credential_cache_service_factory_win.h
@@ -21,6 +21,13 @@ class CredentialCacheServiceFactory : public ProfileKeyedServiceFactory {
 
   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>;
 
@@ -28,9 +35,6 @@ class CredentialCacheServiceFactory : public ProfileKeyedServiceFactory {
 
   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;