[NTP Snippets Fetcher] Enable sending info from LanguageModel by default

components/ntp_snippets/remote/ntp_snippets_json_request.cc

 // 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.
 
 #include "components/ntp_snippets/remote/ntp_snippets_json_request.h"
 
 #include <algorithm>
 #include <utility>
 #include <vector>
 
@@ skipping 54 matching lines @@
     return 2;
   }
   return std::max(0, variations::GetVariationParamByFeatureAsInt(
                          ntp_snippets::kArticleSuggestionsFeature,
                          kBackground5xxRetriesName, 0));
 }
 
 bool IsSendingTopLanguagesEnabled() {
   return variations::GetVariationParamByFeatureAsBool(
       ntp_snippets::kArticleSuggestionsFeature, kSendTopLanguagesName,
-      /*default_value=*/false);
+      /*default_value=*/true);
 }
 
 bool IsSendingUserClassEnabled() {
   return variations::GetVariationParamByFeatureAsBool(
       ntp_snippets::kArticleSuggestionsFeature, kSendUserClassName,
       /*default_value=*/false);
 }
 
 // Translate the BCP 47 |language_code| into a posix locale string.
 std::string PosixLocaleFromBCP47Language(const std::string& language_code) {
@@ skipping 429 matching lines @@
           "NewTabPage.Languages.UILanguageRatioInTwoTopLanguages",
           ratio_ui_in_both_languages * 100);
       break;
     }
   }
 }
 
 }  // namespace internal
 
 }  // namespace ntp_snippets