[ObjC ARC] Converts components/signin/ios/browser:browser to ARC.

components/signin/ios/browser/account_consistency_service.h

Index: components/signin/ios/browser/account_consistency_service.h
diff --git a/components/signin/ios/browser/account_consistency_service.h b/components/signin/ios/browser/account_consistency_service.h
index 1f7a1e6eb3facdf7c622fb8fe2acc5c140163f8c..3723c42121a556f78be3a9f802899d28419acc17 100644
--- a/components/signin/ios/browser/account_consistency_service.h
+++ b/components/signin/ios/browser/account_consistency_service.h
@@ -11,7 +11,6 @@
 #include <set>
 #include <string>
 
-#include "base/mac/scoped_nsobject.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/time/time.h"
@@ -178,11 +177,10 @@ class AccountConsistencyService : public KeyedService,
   std::map<std::string, base::Time> last_cookie_update_map_;
 
   // Web view used to apply the CHROME_CONNECTED cookie requests.
-  base::scoped_nsobject<WKWebView> web_view_;
+  __strong WKWebView* web_view_;
   // Navigation delegate of |web_view_| that informs the service when a cookie
   // request has been applied.
-  base::scoped_nsobject<AccountConsistencyNavigationDelegate>
-      navigation_delegate_;
+  AccountConsistencyNavigationDelegate* navigation_delegate_;
 
   // Handlers reacting on GAIA responses with the X-Chrome-Manage-Accounts
   // header set.