components: Move PrefRegistrySyncable into user_prefs namespace.

chrome/browser/bookmarks/bookmark_model_factory.h

Index: chrome/browser/bookmarks/bookmark_model_factory.h
diff --git a/chrome/browser/bookmarks/bookmark_model_factory.h b/chrome/browser/bookmarks/bookmark_model_factory.h
index b4b81f0c3a6decfcba1c0d7abdfdadd89327ed9a..a64deed602472b87b6cdcae3d5633fd9bc00c0a8 100644
--- a/chrome/browser/bookmarks/bookmark_model_factory.h
+++ b/chrome/browser/bookmarks/bookmark_model_factory.h
@@ -11,12 +11,10 @@
 
 template <typename T> struct DefaultSingletonTraits;
 
-class PrefRegistrySyncable;
 class Profile;
 class BookmarkModel;
 
-// Singleton that owns all BookmarkModel and associates them with
-// Profiles.
+// Singleton that owns all BookmarkModel and associates them with Profiles.
 class BookmarkModelFactory : public ProfileKeyedServiceFactory {
  public:
   static BookmarkModel* GetForProfile(Profile* profile);
@@ -34,7 +32,8 @@ class BookmarkModelFactory : public ProfileKeyedServiceFactory {
   // ProfileKeyedServiceFactory:
   virtual ProfileKeyedService* 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;