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

components/search_engines/template_url_parser.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_PARSER_H_
 #define COMPONENTS_SEARCH_ENGINES_TEMPLATE_URL_PARSER_H_
 
 #include <stddef.h>
 
 #include <memory>
@@ skipping 22 matching lines @@
   // Decodes the chunk of data representing a TemplateURL, creates the
   // TemplateURL, and returns it.  Returns null if the data does not describe a
   // valid TemplateURL, the URLs referenced do not point to valid http/https
   // resources, or for some other reason we do not support the described
   // TemplateURL.  |parameter_filter| can be used if you want to filter some
   // parameters out of the URL.  For example, when importing from another
   // browser, we remove any parameter identifying that browser.  If set to null,
   // the URL is not modified.
   static std::unique_ptr<TemplateURL> Parse(
       const SearchTermsData& search_terms_data,
-      bool show_in_default_list,
       const char* data,
       size_t length,
       ParameterFilter* parameter_filter);
 
  private:
   // No one should create one of these.
   TemplateURLParser();
 
   DISALLOW_COPY_AND_ASSIGN(TemplateURLParser);
 };
 
 #endif  // COMPONENTS_SEARCH_ENGINES_TEMPLATE_URL_PARSER_H_