Enable Chrome to tweak search engines for some locales

components/search_engines/template_url_service.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_H_
 #define COMPONENTS_SEARCH_ENGINES_TEMPLATE_URL_SERVICE_H_
 
 #include <stddef.h>
 
 #include <list>
@@ skipping 160 matching lines @@
   // need a raw pointer to the TemplateURL so they can access it later.)
   TemplateURL* Add(std::unique_ptr<TemplateURL> template_url);
 
   // Like Add(), but overwrites the |template_url|'s values with the provided
   // ones.
   TemplateURL* AddWithOverrides(std::unique_ptr<TemplateURL> template_url,
                                 const base::string16& short_name,
                                 const base::string16& keyword,
                                 const std::string& url);
 
-  // Adds a search engine with the specified info.
+  // Adds a search engine with the specified info for extensions.
   TemplateURL* AddExtensionControlledTURL(
       std::unique_ptr<TemplateURL> template_url,
       std::unique_ptr<TemplateURL::AssociatedExtensionInfo> info);
 
   // Removes the keyword from the model. This deletes the supplied TemplateURL.
   // This fails if the supplied template_url is the default search provider.
   void Remove(TemplateURL* template_url);
 
   // Removes any TemplateURL of the specified |type| associated with
   // |extension_id|. Unlike with Remove(), this can be called when the
@@ skipping 621 matching lines @@
   // Helper class to manage the default search engine.
   DefaultSearchManager default_search_manager_;
 
   std::unique_ptr<GoogleURLTracker::Subscription>
       google_url_updated_subscription_;
 
   DISALLOW_COPY_AND_ASSIGN(TemplateURLService);
 };
 
 #endif  // COMPONENTS_SEARCH_ENGINES_TEMPLATE_URL_SERVICE_H_