Remove use of deprecated MessageLoop methods in sync.

sync/internal_api/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 "sync/internal_api/public/attachments/attachment_downloader_impl.h"
 
 #include <stdint.h>
 
 #include <map>
 
 #include "base/bind.h"
+#include "base/location.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 "google_apis/gaia/fake_oauth2_token_service.h"
 #include "google_apis/gaia/gaia_constants.h"
 #include "net/http/http_response_headers.h"
 #include "net/url_request/test_url_fetcher_factory.h"
 #include "net/url_request/url_request_test_util.h"
 #include "sync/api/attachments/attachment.h"
 #include "sync/internal_api/public/attachments/attachment_uploader_impl.h"
 #include "sync/internal_api/public/attachments/attachment_util.h"
@@ skipping 45 matching lines @@
 
 void MockOAuth2TokenService::RespondToAccessTokenRequest(
     GoogleServiceAuthError error) {
   EXPECT_TRUE(last_request_);
   std::string access_token;
   base::Time expiration_time;
   if (error == GoogleServiceAuthError::AuthErrorNone()) {
     access_token = kAccessToken;
     expiration_time = base::Time::Max();
   }
-  base::MessageLoop::current()->PostTask(
+  base::ThreadTaskRunnerHandle::Get()->PostTask(
       FROM_HERE,
       base::Bind(&OAuth2TokenService::RequestImpl::InformConsumer,
-                 last_request_,
-                 error,
-                 access_token,
-                 expiration_time));
+                 last_request_, error, access_token, expiration_time));
 }
 
 void MockOAuth2TokenService::FetchOAuth2Token(
     RequestImpl* request,
     const std::string& account_id,
     net::URLRequestContextGetter* getter,
     const std::string& client_id,
     const std::string& client_secret,
     const ScopeSet& scopes) {
   // Only one request at a time is allowed.
@@ skipping 435 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