[translate] Add translate ranker model loader.

components/translate/core/browser/translate_manager.h

Index: components/translate/core/browser/translate_manager.h
diff --git a/components/translate/core/browser/translate_manager.h b/components/translate/core/browser/translate_manager.h
index a6b19e3b24011ce837309cc63e392e3f05668a56..b164051b3e4b4c0832d85bc2ba76bd9391116abf 100644
--- a/components/translate/core/browser/translate_manager.h
+++ b/components/translate/core/browser/translate_manager.h
@@ -29,6 +29,7 @@ extern const base::Feature kTranslateLanguageByULP;
 class TranslateClient;
 class TranslateDriver;
 class TranslatePrefs;
+class TranslateRanker;
 
 namespace testing {
 class TranslateManagerTest;
@@ -46,6 +47,7 @@ class 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();
 
@@ -161,6 +163,7 @@ class TranslateManager {
 
   TranslateClient* translate_client_;  // Weak.
   TranslateDriver* translate_driver_;  // Weak.
+  TranslateRanker* translate_ranker_;  // Weak.
 
   LanguageState language_state_;