Use ScopedTaskEnvironment instead of MessageLoop in storage unit tests.

storage/browser/database/database_quota_client_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 <stdint.h>
 
 #include <map>
 
 #include "base/bind.h"
 #include "base/files/file_path.h"
 #include "base/location.h"
 #include "base/run_loop.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/utf_string_conversions.h"
+#include "base/test/scoped_task_environment.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "net/base/completion_callback.h"
 #include "net/base/net_errors.h"
 #include "storage/browser/database/database_quota_client.h"
 #include "storage/browser/database/database_tracker.h"
 #include "storage/browser/database/database_util.h"
 #include "storage/common/database/database_identifier.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using storage::DatabaseQuotaClient;
@@ skipping 160 matching lines @@
   void OnGetOriginUsageComplete(int64_t usage) { usage_ = usage; }
 
   void OnGetOriginsComplete(const std::set<GURL>& origins) {
     origins_ = origins;
   }
 
   void OnDeleteOriginDataComplete(storage::QuotaStatusCode status) {
     delete_status_ = status;
   }
 
-  base::MessageLoop message_loop_;
+  base::test::ScopedTaskEnvironment scoped_task_environment_;
   int64_t usage_;
   std::set<GURL> origins_;
   storage::QuotaStatusCode delete_status_;
   scoped_refptr<MockDatabaseTracker> mock_tracker_;
   base::WeakPtrFactory<DatabaseQuotaClientTest> weak_factory_;
 };
 
 TEST_F(DatabaseQuotaClientTest, GetOriginUsage) {
   DatabaseQuotaClient client(base::ThreadTaskRunnerHandle::Get().get(),
                              mock_tracker());
@@ skipping 61 matching lines @@
   mock_tracker()->set_async_delete(false);
   EXPECT_TRUE(DeleteOriginData(&client, kTemp, kOriginA));
   EXPECT_EQ(1, mock_tracker()->delete_called_count());
 
   mock_tracker()->set_async_delete(true);
   EXPECT_TRUE(DeleteOriginData(&client, kTemp, kOriginA));
   EXPECT_EQ(2, mock_tracker()->delete_called_count());
 }
 
 }  // namespace content