Updates language model on iOS.

ios/chrome/browser/translate/chrome_ios_translate_client.mm

Index: ios/chrome/browser/translate/chrome_ios_translate_client.mm
diff --git a/ios/chrome/browser/translate/chrome_ios_translate_client.mm b/ios/chrome/browser/translate/chrome_ios_translate_client.mm
index 85b3d34a0338c6c55172dd2bf9222419440cf66c..b474a2808e9824d21771cc77688f152b2f04b04e 100644
--- a/ios/chrome/browser/translate/chrome_ios_translate_client.mm
+++ b/ios/chrome/browser/translate/chrome_ios_translate_client.mm
@@ -24,6 +24,7 @@
 #include "ios/chrome/browser/pref_names.h"
 #import "ios/chrome/browser/translate/after_translate_infobar_controller.h"
 #import "ios/chrome/browser/translate/before_translate_infobar_controller.h"
+#include "ios/chrome/browser/translate/language_model_factory.h"
 #import "ios/chrome/browser/translate/never_translate_infobar_controller.h"
 #include "ios/chrome/browser/translate/translate_accept_languages_factory.h"
 #import "ios/chrome/browser/translate/translate_message_infobar_controller.h"
@@ -46,7 +47,10 @@ ChromeIOSTranslateClient::ChromeIOSTranslateClient(web::WebState* web_state)
           prefs::kAcceptLanguages)),
       translate_driver_(web_state,
                         web_state->GetNavigationManager(),
-                        translate_manager_.get()) {}
+                        translate_manager_.get(),
+                        LanguageModelFactory::GetForBrowserState(
+                            ios::ChromeBrowserState::FromBrowserState(
+                                web_state->GetBrowserState()))) {}
 
 ChromeIOSTranslateClient::~ChromeIOSTranslateClient() {
 }