components: Move PrefRegistrySyncable into user_prefs namespace.

chrome/browser/prefs/chrome_pref_service_unittest.cc

Index: chrome/browser/prefs/chrome_pref_service_unittest.cc
diff --git a/chrome/browser/prefs/chrome_pref_service_unittest.cc b/chrome/browser/prefs/chrome_pref_service_unittest.cc
index fbe56df30b388193b84947a1bf853c82ebe31106..4dab4fca53b4fc3610920e0a113e908ba6f58a19 100644
--- a/chrome/browser/prefs/chrome_pref_service_unittest.cc
+++ b/chrome/browser/prefs/chrome_pref_service_unittest.cc
@@ -101,26 +101,29 @@ TEST_F(ChromePrefServiceUserFilePrefsTest, PreserveEmptyValue) {
 
   PrefServiceMockBuilder builder;
   builder.WithUserFilePrefs(pref_file, message_loop_.message_loop_proxy());
-  scoped_refptr<PrefRegistrySyncable> registry(new PrefRegistrySyncable);
+  scoped_refptr<user_prefs::PrefRegistrySyncable> registry(
+      new user_prefs::PrefRegistrySyncable);
   scoped_ptr<PrefServiceSyncable> prefs(builder.CreateSyncable(registry));
 
   // Register testing prefs.
   registry->RegisterListPref("list",
-                             PrefRegistrySyncable::UNSYNCABLE_PREF);
-  registry->RegisterDictionaryPref("dict",
-                                   PrefRegistrySyncable::UNSYNCABLE_PREF);
+                             user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
+  registry->RegisterDictionaryPref(
+      "dict",
+      user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
 
   base::ListValue* non_empty_list = new base::ListValue;
   non_empty_list->Append(base::Value::CreateStringValue("test"));
   registry->RegisterListPref("list_needs_empty_value",
                              non_empty_list,
-                             PrefRegistrySyncable::UNSYNCABLE_PREF);
+                             user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
 
   base::DictionaryValue* non_empty_dict = new base::DictionaryValue;
   non_empty_dict->SetString("dummy", "whatever");
-  registry->RegisterDictionaryPref("dict_needs_empty_value",
-                                   non_empty_dict,
-                                   PrefRegistrySyncable::UNSYNCABLE_PREF);
+  registry->RegisterDictionaryPref(
+      "dict_needs_empty_value",
+      non_empty_dict,
+      user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
 
   // Set all testing prefs to empty.
   ClearListValue(prefs.get(), "list");