[NTP Snippets] Another round of clang-tidy cleanups

components/translate/core/browser/language_model.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/translate/core/browser/language_model.h"
 
 #include <algorithm>
 #include <map>
 #include <set>
 
@@ skipping 55 matching lines @@
   // If the sample is not large enough yet, pretend there are no top languages.
   if (counters_sum < kMinCountersSum)
     return std::vector<LanguageModel::LanguageInfo>();
 
   std::vector<LanguageModel::LanguageInfo> top_languages;
   int counter_value = 0;
   for (base::DictionaryValue::Iterator itr(dict); !itr.IsAtEnd();
        itr.Advance()) {
     if (!itr.value().GetAsInteger(&counter_value))
       continue;
-    top_languages.push_back(
-        {itr.key(), static_cast<float>(counter_value) / counters_sum});
+    top_languages.emplace_back(
+        itr.key(), static_cast<float>(counter_value) / counters_sum);
   }
   return top_languages;
 }
 
 }  // namespace
 
 LanguageModel::LanguageModel(PrefService* pref_service)
     : pref_service_(pref_service) {}
 
 LanguageModel::~LanguageModel() = default;
@@ skipping 38 matching lines @@
   int counter_value = 0;
   // If the key |language_code| does not exist, |counter_value| stays 0.
   dict->GetInteger(language_code, &counter_value);
   dict->SetInteger(language_code, counter_value + 1);
 
   if (GetCountersSum(*dict) > kMaxCountersSum)
     DiscountAndCleanCounters(dict);
 }
 
 }  // namespace translate