Allow TranslateRanker to override decisions taken by heuristics.

components/translate/core/browser/translate_ranker_impl.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_TRANSLATE_CORE_BROWSER_TRANSLATE_RANKER_IMPL_H_
 #define COMPONENTS_TRANSLATE_CORE_BROWSER_TRANSLATE_RANKER_IMPL_H_
 
 #include <memory>
 #include <string>
 
@@ skipping 17 matching lines @@
 
 namespace translate {
 
 class TranslatePrefs;
 
 // Features used to enable ranker query, enforcement and logging. Note that
 // enabling enforcement implies (forces) enabling queries.
 extern const base::Feature kTranslateRankerQuery;
 extern const base::Feature kTranslateRankerEnforcement;
 extern const base::Feature kTranslateRankerLogging;
+extern const base::Feature kTranslateRankerDecisionOverride;
 
 struct TranslateRankerFeatures {
   TranslateRankerFeatures();
 
   TranslateRankerFeatures(int accepted,
                           int denied,
                           int ignored,
                           const std::string& src,
                           const std::string& dst,
                           const std::string& cntry,
@@ skipping 36 matching lines @@
   static base::FilePath GetModelPath(const base::FilePath& data_dir);
 
   // Get the URL from which the download the translate ranker model, by default
   // from Finch.
   static GURL GetModelURL();
 
   // TranslateRanker...
   bool IsLoggingEnabled() override;
   bool IsQueryEnabled() override;
   bool IsEnforcementEnabled() override;
+  bool IsDecisionOverrideEnabled() override;
   int GetModelVersion() const override;
   bool ShouldOfferTranslation(const TranslatePrefs& translate_prefs,
                               const std::string& src_lang,
                               const std::string& dst_lang) override;
   void AddTranslateEvent(
       const metrics::TranslateEventProto& translate_event) override;
   void FlushTranslateEvents(
       std::vector<metrics::TranslateEventProto>* events) override;
 
   void OnModelAvailable(
@@ skipping 19 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(TranslateRankerImpl);
 };
 
 }  // namespace translate
 
 std::ostream& operator<<(std::ostream& stream,
                          const translate::TranslateRankerFeatures& features);
 
 #endif  // COMPONENTS_TRANSLATE_CORE_BROWSER_TRANSLATE_RANKER_IMPL_H_