[translate] Add translate ranker model loader.

components/translate/core/browser/mock_translate_ranker.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_MOCK_TRANSLATE_RANKER_H_
+#define COMPONENTS_TRANSLATE_CORE_BROWSER_MOCK_TRANSLATE_RANKER_H_
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "components/translate/core/browser/translate_ranker.h"
+
+namespace metrics {
+class TranslateEventProto;
+}
+
+namespace translate {
+
+class TranslatePrefs;
+
+namespace testing {
+
+class MockTranslateRanker : public TranslateRanker {
+ public:
+  MockTranslateRanker();
+  ~MockTranslateRanker() override;
+
+  void set_is_logging_enabled(bool val) { is_logging_enabled_ = val; }
+  void set_is_query_enabled(bool val) { is_query_enabled_ = val; }
+  void set_is_enforcement_enabled(bool val) { is_enforcement_enabled_ = val; }
+  void set_model_version(int val) { model_version_ = val; }
+  void set_should_offer_translation(bool val) {
+    should_offer_translation_ = val;
+  }
+
+  // TranslateRanker...
+  bool IsLoggingEnabled() override;
+  bool IsQueryEnabled() override;
+  bool IsEnforcementEnabled() 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;
+
+ private:
+  std::vector<metrics::TranslateEventProto> event_cache_;
+
+  bool is_logging_enabled_ = false;
+  bool is_query_enabled_ = false;
+  bool is_enforcement_enabled_ = false;
+  bool model_version_ = 0;
+  bool should_offer_translation_ = true;
+
+  DISALLOW_COPY_AND_ASSIGN(MockTranslateRanker);
+};
+
+}  // namespace testing
+}  // namespace translate
+
+#endif  // COMPONENTS_TRANSLATE_CORE_BROWSER_MOCK_TRANSLATE_RANKER_H_