[Sync] Rewriting ".reset(new" pattern to use "= base::MakeUnique" instead.

components/sync/engine_impl/attachments/attachment_downloader_impl_unittest.cc

 // 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.
 
 #include "components/sync/engine_impl/attachments/attachment_downloader_impl.h"
 
 #include <map>
 #include <utility>
 
 #include "base/bind.h"
 #include "base/location.h"
+#include "base/memory/ptr_util.h"
 #include "base/memory/weak_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "base/single_thread_task_runner.h"
 #include "base/test/histogram_tester.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "components/sync/engine/attachments/attachment_util.h"
 #include "components/sync/engine_impl/attachments/attachment_uploader_impl.h"
 #include "components/sync/model/attachments/attachment.h"
 #include "google_apis/gaia/fake_oauth2_token_service.h"
@@ skipping 177 matching lines @@
   std::unique_ptr<AttachmentDownloader> attachment_downloader_;
   ResultsMap download_results_;
   int num_completed_downloads_;
   const AttachmentId attachment_id_;
 };
 
 void AttachmentDownloaderImplTest::SetUp() {
   url_request_context_getter_ =
       new net::TestURLRequestContextGetter(message_loop_.task_runner());
   url_fetcher_factory_.set_remove_fetcher_on_delete(true);
-  token_service_.reset(new MockOAuth2TokenService());
+  token_service_ = base::MakeUnique<MockOAuth2TokenService>();
   token_service_->AddAccount(kAccountId);
   scoped_refptr<OAuth2TokenServiceRequest::TokenServiceProvider>
       token_service_provider(new TokenServiceProvider(token_service_.get()));
 
   OAuth2TokenService::ScopeSet scopes;
   scopes.insert(GaiaConstants::kChromeSyncOAuth2Scope);
   attachment_downloader_ = AttachmentDownloader::Create(
       GURL(kAttachmentServerUrl), url_request_context_getter_, kAccountId,
       scopes, token_service_provider, std::string(kStoreBirthday), kModelType);
 }
@@ skipping 306 matching lines @@
   raw += "\n";
   std::replace(raw.begin(), raw.end(), '\n', '\0');
   scoped_refptr<net::HttpResponseHeaders> headers(
       new net::HttpResponseHeaders(raw));
   uint32_t extracted;
   ASSERT_FALSE(
       AttachmentDownloaderImpl::ExtractCrc32c(headers.get(), &extracted));
 }
 
 }  // namespace syncer