Enable ARC for //ios/web_view/internal/translate/*.m.

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/web_view_browser_state.h"
 #import "ios/web_view/public/cwv_translate_delegate.h"
 #include "url/gurl.h"
 
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
 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,
           prefs::kAcceptLanguages)),
       translate_driver_(web_state,
                         web_state->GetNavigationManager(),
-                        translate_manager_.get()) {}
+                        translate_manager_.get()),
+      delegate_(nil) {}

[michaeldo, 2017/03/21 16:29:18]

please fix closing paren location and format to line up with translate_manger
line.

However, please test with WeakNSProtocol as I don't think you'll need this
anymore.

[Hiroshi Ichikawa, 2017/03/22 01:32:16]

Removed after switching to WeakNSProtocol.

 
 WebViewTranslateClient::~WebViewTranslateClient() = default;
 
 // TranslateClient implementation:
 
 std::unique_ptr<infobars::InfoBar> WebViewTranslateClient::CreateInfoBar(
     std::unique_ptr<translate::TranslateInfoBarDelegate> delegate) const {
   NOTREACHED();
   return nullptr;
 }
@@ skipping 87 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