Remove old default search preferences.

components/search_engines/template_url_service.cc

Index: components/search_engines/template_url_service.cc
diff --git a/components/search_engines/template_url_service.cc b/components/search_engines/template_url_service.cc
index 29687f27def5e70c51318f32829ab8bd6bd1428e..cad5085b5b061a4ecf0fa362244959bfc1fc984d 100644
--- a/components/search_engines/template_url_service.cc
+++ b/components/search_engines/template_url_service.cc
@@ -300,38 +300,6 @@ void TemplateURLService::RegisterProfilePrefs(
                                std::string(),
                                flags);
   registry->RegisterBooleanPref(prefs::kDefaultSearchProviderEnabled, true);
-  registry->RegisterStringPref(prefs::kDefaultSearchProviderName,
-                               std::string());
-  registry->RegisterStringPref(prefs::kDefaultSearchProviderID, std::string());
-  registry->RegisterStringPref(prefs::kDefaultSearchProviderPrepopulateID,
-                               std::string());
-  registry->RegisterStringPref(prefs::kDefaultSearchProviderSuggestURL,
-                               std::string());
-  registry->RegisterStringPref(prefs::kDefaultSearchProviderSearchURL,
-                               std::string());
-  registry->RegisterStringPref(prefs::kDefaultSearchProviderInstantURL,
-                               std::string());
-  registry->RegisterStringPref(prefs::kDefaultSearchProviderImageURL,
-                               std::string());
-  registry->RegisterStringPref(prefs::kDefaultSearchProviderNewTabURL,
-                               std::string());
-  registry->RegisterStringPref(prefs::kDefaultSearchProviderSearchURLPostParams,
-                               std::string());
-  registry->RegisterStringPref(
-      prefs::kDefaultSearchProviderSuggestURLPostParams, std::string());
-  registry->RegisterStringPref(
-      prefs::kDefaultSearchProviderInstantURLPostParams, std::string());
-  registry->RegisterStringPref(prefs::kDefaultSearchProviderImageURLPostParams,
-                               std::string());
-  registry->RegisterStringPref(prefs::kDefaultSearchProviderKeyword,
-                               std::string());
-  registry->RegisterStringPref(prefs::kDefaultSearchProviderIconURL,
-                               std::string());
-  registry->RegisterStringPref(prefs::kDefaultSearchProviderEncodings,
-                               std::string());
-  registry->RegisterListPref(prefs::kDefaultSearchProviderAlternateURLs);
-  registry->RegisterStringPref(
-      prefs::kDefaultSearchProviderSearchTermsReplacementKey, std::string());
 }
 
 // static