[ObjC ARC] Converts ios/chrome/test/app:test_support to ARC.

ios/chrome/browser/ui/sync/sync_fake_server_egtest.mm

 // Copyright 2016 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 <EarlGrey/EarlGrey.h>
 #import <XCTest/XCTest.h>
 
 #include "base/strings/sys_string_conversions.h"
 #include "components/bookmarks/browser/bookmark_model.h"
 #include "components/bookmarks/browser/titled_url_match.h"
@@ skipping 20 matching lines @@
 #import "ios/chrome/test/earl_grey/chrome_test_case.h"
 #import "ios/public/provider/chrome/browser/signin/fake_chrome_identity.h"
 #import "ios/public/provider/chrome/browser/signin/fake_chrome_identity_service.h"
 #import "ios/testing/wait_util.h"
 #import "ios/web/public/test/http_server/http_server.h"
 #include "ios/web/public/test/http_server/http_server_util.h"
 #import "net/base/mac/url_conversions.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "url/gurl.h"
 
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
 namespace {
 
 // Constant for timeout while waiting for asynchronous sync operations.
 const NSTimeInterval kSyncOperationTimeout = 10.0;
 
 // Returns a fake identity.
 ChromeIdentity* GetFakeIdentity1() {
   return [FakeChromeIdentity identityWithEmail:@"foo@gmail.com"
                                         gaiaID:@"fooID"
                                           name:@"Fake Foo"];
@@ skipping 397 matching lines @@
                   block:^BOOL {
                     NSError* error = nil;
                     BOOL result =
                         chrome_test_util::VerifyNumberOfSyncEntitiesWithName(
                             syncer::TYPED_URLS, mockURL.spec(), 1, &error);
                     blockSafeError = [error copy];
                     return result;
                   }];
   BOOL success = [condition waitWithTimeout:kSyncOperationTimeout];
   DCHECK(success || blockSafeError);
-  if (blockSafeError) {
-    [blockSafeError autorelease];
-  }
   GREYAssertTrue(success, [blockSafeError localizedDescription]);
 }
 
 // Tests that typed url is downloaded from sync server.
 - (void)testSyncTypedUrlDownload {
   const GURL mockURL("http://not-a-real-site/");
 
   chrome_test_util::ClearBrowsingHistory();
   [self setTearDownHandler:^{
     chrome_test_util::ClearBrowsingHistory();
@@ skipping 102 matching lines @@
       conditionWithName:@"Wait for typed URL to be downloaded."
                   block:^BOOL {
                     NSError* error = nil;
                     BOOL result = chrome_test_util::IsTypedUrlPresentOnClient(
                         mockURL, NO, &error);
                     blockSafeError = [error copy];
                     return result;
                   }];
   BOOL success = [condition waitWithTimeout:kSyncOperationTimeout];
   DCHECK(success || blockSafeError);
-  if (blockSafeError) {
-    [blockSafeError autorelease];
-  }
   GREYAssert(success, [blockSafeError localizedDescription]);
 }
 
 #pragma mark - Test Utilities
 
 // Adds a bookmark with the given |url| and |title| into the Mobile Bookmarks
 // folder.
 // TODO(crbug.com/646164): This is copied from bookmarks_egtest.mm and should
 // move to common location.
 - (void)addBookmark:(const GURL)url withTitle:(NSString*)title {
@@ skipping 23 matching lines @@
 
   // Verify the correct number of bookmarks exist.
   base::string16 matchString = base::SysNSStringToUTF16(title);
   std::vector<bookmarks::TitledUrlMatch> matches;
   bookmarkModel->GetBookmarksMatching(matchString, 50, &matches);
   const size_t count = matches.size();
   GREYAssertEqual(expectedCount, count, @"Unexpected number of bookmarks");
 }
 
 @end