[translate] Add translate ranker model loader.

ios/web_view/internal/translate/criwv_translate_client.mm

Index: ios/web_view/internal/translate/criwv_translate_client.mm
diff --git a/ios/web_view/internal/translate/criwv_translate_client.mm b/ios/web_view/internal/translate/criwv_translate_client.mm
index d5bbcde06741d24d4a59fcaf8f6f472c0bca38ac..f76bd27c9825fef8ea86aa8f7a05bccae860f943 100644
--- a/ios/web_view/internal/translate/criwv_translate_client.mm
+++ b/ios/web_view/internal/translate/criwv_translate_client.mm
@@ -7,8 +7,8 @@
 #include <vector>
 
 #include "base/logging.h"
-#include "base/memory/ptr_util.h"
 #import "base/mac/scoped_nsobject.h"
+#include "base/memory/ptr_util.h"
 #include "components/infobars/core/infobar.h"
 #include "components/prefs/pref_service.h"
 #include "components/translate/core/browser/page_translated_details.h"
@@ -23,6 +23,7 @@
 #include "ios/web_view/internal/pref_names.h"
 #include "ios/web_view/internal/translate/criwv_translate_accept_languages_factory.h"
 #import "ios/web_view/internal/translate/criwv_translate_manager_impl.h"
+#include "ios/web_view/internal/translate/criwv_translate_ranker_factory.h"
 #import "ios/web_view/public/criwv_translate_delegate.h"
 #include "url/gurl.h"
 
@@ -34,6 +35,9 @@ CRIWVTranslateClient::CRIWVTranslateClient(web::WebState* web_state)
     : web::WebStateObserver(web_state),
       translate_manager_(base::MakeUnique<translate::TranslateManager>(
           this,
+          CRIWVTranslateRankerFactory::GetInstance()->GetForBrowserState(
+              CRIWVBrowserState::FromBrowserState(
+                  web_state->GetBrowserState())),
           prefs::kAcceptLanguages)),
       translate_driver_(web_state,
                         web_state->GetNavigationManager(),