Delete from Sync the artificial search engines created by the omnibox extensions.

components/search_engines/template_url_service_client.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef COMPONENTS_SEARCH_ENGINES_TEMPLATE_URL_SERVICE_CLIENT_H_
 #define COMPONENTS_SEARCH_ENGINES_TEMPLATE_URL_SERVICE_CLIENT_H_
 
 #include "base/strings/string16.h"
 #include "components/search_engines/template_url_id.h"
 
@@ skipping 19 matching lines @@
   virtual void DeleteAllSearchTermsForKeyword(TemplateURLID id) = 0;
 
   // Sets the search terms for the specified url and keyword.
   virtual void SetKeywordSearchTermsForURL(const GURL& url,
                                            TemplateURLID id,
                                            const base::string16& term) = 0;
 
   // Adds the given URL to history as a keyword generated visit.
   virtual void AddKeywordGeneratedVisit(const GURL& url) = 0;
 
-  // Restores the extension info of a TemplateURL loaded from the database.
-  virtual void RestoreExtensionInfoIfNecessary(TemplateURL* template_url) = 0;
+  // Given the main search |url| for a TemplateURL, returns whether the
+  // TemplateURL is from an omnibox extension.
+  virtual bool IsOmniboxExtensionURL(const std::string& url) = 0;
 };
 
 #endif  // COMPONENTS_SEARCH_ENGINES_TEMPLATE_URL_SERVICE_CLIENT_H_