components: Move PrefRegistrySyncable into user_prefs namespace.

chrome/browser/password_manager/password_store_factory.h

Index: chrome/browser/password_manager/password_store_factory.h
diff --git a/chrome/browser/password_manager/password_store_factory.h b/chrome/browser/password_manager/password_store_factory.h
index d174a42d988c12ca0ef40ad9cd824b1b43177f66..90126161b81e1dc3753eba0a4df80ba0bf391c20 100644
--- a/chrome/browser/password_manager/password_store_factory.h
+++ b/chrome/browser/password_manager/password_store_factory.h
@@ -11,7 +11,6 @@
 #include "chrome/browser/profiles/refcounted_profile_keyed_service_factory.h"
 
 class PasswordStore;
-class PrefRegistrySyncable;
 class Profile;
 
 #if !defined(OS_MACOSX) && !defined(OS_CHROMEOS) && defined(OS_POSIX)
@@ -45,7 +44,8 @@ class PasswordStoreFactory : public RefcountedProfileKeyedServiceFactory {
   // ProfileKeyedServiceFactory:
   virtual scoped_refptr<RefcountedProfileKeyedService> BuildServiceInstanceFor(
       content::BrowserContext* context) const OVERRIDE;
-  virtual void RegisterUserPrefs(PrefRegistrySyncable* registry) OVERRIDE;
+  virtual void RegisterUserPrefs(
+      user_prefs::PrefRegistrySyncable* registry) OVERRIDE;
   virtual content::BrowserContext* GetBrowserContextToUse(
       content::BrowserContext* context) const OVERRIDE;
   virtual bool ServiceIsNULLWhileTesting() const OVERRIDE;