Change behaivor to decide whether a search engine should be shown in the default list

components/search_engines/template_url_data.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_DATA_H_
 #define COMPONENTS_SEARCH_ENGINES_TEMPLATE_URL_DATA_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 38 matching lines @@
   std::string suggestions_url_post_params;
   std::string instant_url_post_params;
   std::string image_url_post_params;
 
   // Optional favicon for the TemplateURL.
   GURL favicon_url;
 
   // URL to the OSD file this came from. May be empty.
   GURL originating_url;
 
-  // Whether this TemplateURL is shown in the default list of search providers.
-  // This is just a property and does not indicate whether the TemplateURL has a
-  // TemplateURLRef that supports replacement. Use
-  // TemplateURL::ShowInDefaultList() to test both.
-  bool show_in_default_list;
-
   // Whether it's safe for auto-modification code (the autogenerator and the
   // code that imports data from other browsers) to replace the TemplateURL.
   // This should be set to false for any TemplateURL the user edits, or any
   // TemplateURL that the user clearly manually edited in the past, like a
   // bookmark keyword from another browser.
   bool safe_for_autoreplace;
 
   // The list of supported encodings for the search terms. This may be empty,
   // which indicates the terms should be encoded with UTF-8.
   std::vector<std::string> input_encodings;
@@ skipping 41 matching lines @@
 
  private:
   // Private so we can enforce using the setters and thus enforce that these
   // fields are never empty.
   base::string16 short_name_;
   base::string16 keyword_;
   std::string url_;
 };
 
 #endif  // COMPONENTS_SEARCH_ENGINES_TEMPLATE_URL_DATA_H_