[translate] Add translate ranker model loader.

ios/web_view/internal/translate/web_view_translate_client.mm

 // 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.
 
 #import "ios/web_view/internal/translate/web_view_translate_client.h"
 
 #include <vector>
 
 #include "base/logging.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"
 #include "components/translate/core/browser/translate_accept_languages.h"
 #include "components/translate/core/browser/translate_infobar_delegate.h"
 #include "components/translate/core/browser/translate_manager.h"
 #include "components/translate/core/browser/translate_prefs.h"
 #include "components/translate/core/browser/translate_step.h"
 #include "ios/web/public/browser_state.h"
 #import "ios/web/public/web_state/web_state.h"
 #include "ios/web_view/internal/pref_names.h"
 #import "ios/web_view/internal/translate/cwv_translate_manager_impl.h"
 #include "ios/web_view/internal/translate/web_view_translate_accept_languages_factory.h"
+#include "ios/web_view/internal/translate/web_view_translate_ranker_factory.h"
 #include "ios/web_view/internal/web_view_browser_state.h"
 #import "ios/web_view/public/cwv_translate_delegate.h"
 #include "url/gurl.h"
 
 DEFINE_WEB_STATE_USER_DATA_KEY(ios_web_view::WebViewTranslateClient);
 
 namespace ios_web_view {
 
 WebViewTranslateClient::WebViewTranslateClient(web::WebState* web_state)
     : web::WebStateObserver(web_state),
       translate_manager_(base::MakeUnique<translate::TranslateManager>(
           this,
+          WebViewTranslateRankerFactory::GetInstance()->GetForBrowserState(
+              WebViewBrowserState::FromBrowserState(
+                  web_state->GetBrowserState())),
           prefs::kAcceptLanguages)),
       translate_driver_(web_state,
                         web_state->GetNavigationManager(),
                         translate_manager_.get()) {}
 
 WebViewTranslateClient::~WebViewTranslateClient() = default;
 
 // TranslateClient implementation:
 
 std::unique_ptr<infobars::InfoBar> WebViewTranslateClient::CreateInfoBar(
@@ skipping 91 matching lines @@
 }
 
 void WebViewTranslateClient::WebStateDestroyed() {
   // Translation process can be interrupted.
   // Destroying the TranslateManager now guarantees that it never has to deal
   // with nullptr WebState.
   translate_manager_.reset();
 }
 
 }  // namespace ios_web_view