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

components/search_engines/template_url.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_H_
 #define COMPONENTS_SEARCH_ENGINES_TEMPLATE_URL_H_
 
 #include <stddef.h>
 
 #include <memory>
@@ skipping 595 matching lines @@
     return suggestions_url_ref_;
   }
   const TemplateURLRef& instant_url_ref() const { return instant_url_ref_; }
   const TemplateURLRef& image_url_ref() const { return image_url_ref_; }
   const TemplateURLRef& new_tab_url_ref() const { return new_tab_url_ref_; }
   const TemplateURLRef& contextual_search_url_ref() const {
     return contextual_search_url_ref_;
   }
 
   Type type() const { return type_; }
-  // TODO(ianwen): remove set_type() once RestoreExtensionInfoIfNecessary() no
-  // longer needs it.
-  void set_type(Type type) { type_ = type; }
 
   // This setter shouldn't be used except by TemplateURLService and
   // TemplateURLServiceClient implementations.
   void set_extension_info(
       std::unique_ptr<AssociatedExtensionInfo> extension_info) {
     extension_info_ = std::move(extension_info);
   }
 
   // Returns true if |url| supports replacement.
   bool SupportsReplacement(const SearchTermsData& search_terms_data) const;
@@ skipping 121 matching lines @@
   // URL.
   TemplateURLRef* url_ref_;
 
   TemplateURLRef suggestions_url_ref_;
   TemplateURLRef instant_url_ref_;
   TemplateURLRef image_url_ref_;
   TemplateURLRef new_tab_url_ref_;
   TemplateURLRef contextual_search_url_ref_;
   std::unique_ptr<AssociatedExtensionInfo> extension_info_;
 
   Type type_;

[Peter Kasting, 2016/10/05 00:15:20]

Nit: Can now be const?

[vasilii, 2016/10/05 12:03:48]

Done.

 
   // Caches the computed engine type across successive calls to GetEngineType().
   mutable SearchEngineType engine_type_;
 
   // TODO(sky): Add date last parsed OSD file.
 
   DISALLOW_COPY_AND_ASSIGN(TemplateURL);
 };
 
 #endif  // COMPONENTS_SEARCH_ENGINES_TEMPLATE_URL_H_