[ObjC ARC] Converts ios/web/public/test/fakes:fakes to ARC.

ios/web/public/test/fakes/test_web_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/public/test/fakes/test_web_client.h"
 
 #include "base/logging.h"
 #include "ios/web/test/test_url_constants.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "url/gurl.h"
 
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
 namespace web {
 
 TestWebClient::TestWebClient()
     : last_cert_error_code_(0), last_cert_error_overridable_(true) {}
 
 TestWebClient::~TestWebClient() {}
 
 void TestWebClient::AddAdditionalSchemes(
     std::vector<url::SchemeWithType>* additional_standard_schemes) const {
   url::SchemeWithType web_ui_scheme = {kTestWebUIScheme,
@@ skipping 11 matching lines @@
 }
 
 base::RefCountedMemory* TestWebClient::GetDataResourceBytes(
     int resource_id) const {
   if (!ResourceBundle::HasSharedInstance())
     return nullptr;
   return ResourceBundle::GetSharedInstance().LoadDataResourceBytes(resource_id);
 }
 
 NSString* TestWebClient::GetEarlyPageScript(BrowserState* browser_state) const {
-  return early_page_script_ ? early_page_script_.get() : @"";
+  return early_page_script_ ? early_page_script_ : @"";
 }
 
 void TestWebClient::SetEarlyPageScript(NSString* page_script) {
-  early_page_script_.reset([page_script copy]);
+  early_page_script_ = [page_script copy];
 }
 
 void TestWebClient::AllowCertificateError(
     WebState* web_state,
     int cert_error,
     const net::SSLInfo& ssl_info,
     const GURL& request_url,
     bool overridable,
     const base::Callback<void(bool)>& callback) {
   last_cert_error_code_ = cert_error;
   last_cert_error_ssl_info_ = ssl_info;
   last_cert_error_request_url_ = request_url;
   last_cert_error_overridable_ = overridable;
 
   callback.Run(false);
 }
 
 }  // namespace web