[translate] Add translate ranker model loader.

components/translate/core/browser/translate_manager.h

 // Copyright 2014 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_MANAGER_H_
 #define COMPONENTS_TRANSLATE_CORE_BROWSER_TRANSLATE_MANAGER_H_
 
 #include <map>
 #include <memory>
 #include <string>
@@ skipping 11 matching lines @@
 class TranslateEventProto;
 }
 
 namespace translate {
 
 extern const base::Feature kTranslateLanguageByULP;
 
 class TranslateClient;
 class TranslateDriver;
 class TranslatePrefs;
+class TranslateRanker;
 
 namespace testing {
 class TranslateManagerTest;
 }  // namespace testing
 
 struct TranslateErrorDetails;
 
 // The TranslateManager class is responsible for showing an info-bar when a page
 // in a language different than the user language is loaded.  It triggers the
 // page translation the user requests.
 
 class TranslateManager {
  public:
   // |translate_client| is expected to outlive the TranslateManager.
   // |accept_language_pref_name| is the path for the preference for the
   // accept-languages.
   TranslateManager(TranslateClient* translate_client,
+                   TranslateRanker* translate_ranker,
                    const std::string& accept_language_pref_name);
   virtual ~TranslateManager();
 
   // Returns a weak pointer to this instance.
   base::WeakPtr<TranslateManager> GetWeakPtr();
 
   // Cannot return NULL.
   TranslateClient* translate_client() { return translate_client_; }
 
   // Sets the sequence number of the current page, for use while sending
@@ skipping 95 matching lines @@
                           const TranslatePrefs& translate_prefs);
 
   // Sequence number of the current page.
   int page_seq_no_;
 
   // Preference name for the Accept-Languages HTTP header.
   std::string accept_languages_pref_name_;
 
   TranslateClient* translate_client_;  // Weak.
   TranslateDriver* translate_driver_;  // Weak.
+  TranslateRanker* translate_ranker_;  // Weak.
 
   LanguageState language_state_;
 
   std::unique_ptr<metrics::TranslateEventProto> translate_event_;
 
   base::WeakPtrFactory<TranslateManager> weak_method_factory_;
 
   // By default, don't offer to translate in builds lacking an API key. For
   // testing, set to true to offer anyway.
   static bool ignore_missing_key_for_testing_;
 
   DISALLOW_COPY_AND_ASSIGN(TranslateManager);
 };
 
 }  // namespace translate
 
 #endif  // COMPONENTS_TRANSLATE_CORE_BROWSER_TRANSLATE_MANAGER_H_