Updates language model on iOS.

components/translate/ios/browser/ios_translate_driver.h

Index: components/translate/ios/browser/ios_translate_driver.h
diff --git a/components/translate/ios/browser/ios_translate_driver.h b/components/translate/ios/browser/ios_translate_driver.h
index e9c0f088e94bcdd79cc53bfa0b6c51fd48f61cd9..7043de1682beb6543c96d0776bc4282832bda087 100644
--- a/components/translate/ios/browser/ios_translate_driver.h
+++ b/components/translate/ios/browser/ios_translate_driver.h
@@ -25,6 +25,7 @@ class WebState;
 namespace translate {
 
 class TranslateManager;
+class LanguageModel;
 
 // Content implementation of TranslateDriver.
 class IOSTranslateDriver : public TranslateDriver,
@@ -33,7 +34,8 @@ class IOSTranslateDriver : public TranslateDriver,
  public:
   IOSTranslateDriver(web::WebState* web_state,
                      web::NavigationManager* navigation_manager,
-                     TranslateManager* translate_manager);
+                     TranslateManager* translate_manager,
+                     LanguageModel* language_model);
   ~IOSTranslateDriver() override;
 
   LanguageDetectionController* language_detection_controller() {
@@ -98,6 +100,9 @@ class IOSTranslateDriver : public TranslateDriver,
   // The navigation manager of the tab we are associated with.
   web::NavigationManager* navigation_manager_;
 
+  // Model to be notified about detected language of every page visited.
+  translate::LanguageModel* language_model_;
+
   base::WeakPtr<TranslateManager> translate_manager_;
   std::unique_ptr<TranslateController> translate_controller_;
   std::unique_ptr<LanguageDetectionController> language_detection_controller_;