[ObjC ARC] Converts ios/chrome/browser/net:unit_tests to ARC.Automatically generated ARCMigrate c…

ios/chrome/browser/net/retryable_url_fetcher_unittest.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/chrome/browser/net/retryable_url_fetcher.h"
 
 #import "base/mac/scoped_nsobject.h"
 #include "base/message_loop/message_loop.h"
 #include "ios/web/public/test/test_web_thread.h"
 #include "net/url_request/test_url_fetcher_factory.h"
 #include "net/url_request/url_fetcher_delegate.h"
 #include "net/url_request/url_request_test_util.h"
 #import "testing/gtest_mac.h"
 #include "testing/platform_test.h"
 
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
 namespace {
 // An arbitrary text string for a fake response.
 NSString* const kFakeResponseString = @"Something interesting here.";
 }
 
 // Delegate object to provide data for RetryableURLFetcher and
 // handles the callback when URL is fetched.
 @interface TestRetryableURLFetcherDelegate
     : NSObject<RetryableURLFetcherDelegate>
 // Counts the number of times that a successful response has been processed.
@@ skipping 110 matching lines @@
   // |failing_delegate| does not have URL to fetch, so a fetcher should never
   // be created.
   net::TestURLFetcher* fetcher = factory_.GetFetcherByID(0);
   EXPECT_FALSE(fetcher);
 
   // Verify that response has been called.
   EXPECT_TRUE([failing_delegate responsesProcessed]);
 }
 
 }  // namespace