[NTP Snippets] Another round of clang-tidy cleanups

components/ntp_snippets/remote/ntp_snippets_fetcher.h

 // Copyright 2016 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_NTP_SNIPPETS_REMOTE_NTP_SNIPPETS_FETCHER_H_
 #define COMPONENTS_NTP_SNIPPETS_REMOTE_NTP_SNIPPETS_FETCHER_H_
 
 #include <memory>
 #include <set>
 #include <string>
@@ skipping 169 matching lines @@
     CHROME_READER_API,
     CHROME_CONTENT_SUGGESTIONS_API,
   };
 
   struct RequestBuilder {
     Params params;
     FetchAPI fetch_api = CHROME_READER_API;
     std::string obfuscated_gaia_id;
     bool only_return_personalized_results = false;
     std::string user_class;
-    translate::LanguageModel::LanguageInfo ui_language{"", 0.0f};
-    translate::LanguageModel::LanguageInfo other_top_language{"", 0.0f};
+    translate::LanguageModel::LanguageInfo ui_language;
+    translate::LanguageModel::LanguageInfo other_top_language;
 
     RequestBuilder();
     RequestBuilder(RequestBuilder&&);
     ~RequestBuilder();
 
     std::string BuildRequest();
   };
 
   RequestBuilder MakeRequestBuilder() const;
 
@@ skipping 85 matching lines @@
   std::string last_status_;
   std::string last_fetch_json_;
 
   base::WeakPtrFactory<NTPSnippetsFetcher> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(NTPSnippetsFetcher);
 };
 }  // namespace ntp_snippets
 
 #endif  // COMPONENTS_NTP_SNIPPETS_REMOTE_NTP_SNIPPETS_FETCHER_H_