Use ScopedTaskEnvironment instead of MessageLoop in content unit tests.

content/browser/fileapi/file_system_quota_client_unittest.cc

 // Copyright 2013 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 <memory>
 
 #include "base/bind.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/macros.h"
 #include "base/run_loop.h"
+#include "base/test/scoped_task_environment.h"
 #include "content/public/test/async_file_test_helper.h"
 #include "content/public/test/test_file_system_context.h"
 #include "storage/browser/fileapi/file_system_context.h"
 #include "storage/browser/fileapi/file_system_quota_client.h"
 #include "storage/browser/fileapi/file_system_usage_cache.h"
 #include "storage/browser/fileapi/obfuscated_file_util.h"
 #include "storage/common/fileapi/file_system_types.h"
 #include "storage/common/fileapi/file_system_util.h"
 #include "storage/common/quota/quota_types.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 198 matching lines @@
 
   void OnGetAdditionalUsage(int64_t usage_unused) {
     ++additional_callback_count_;
   }
 
   void OnDeleteOrigin(storage::QuotaStatusCode status) {
     deletion_status_ = status;
   }
 
   base::ScopedTempDir data_dir_;
-  base::MessageLoop message_loop_;
+  base::test::ScopedTaskEnvironment scoped_task_environment_;
   scoped_refptr<storage::FileSystemContext> file_system_context_;
   int64_t usage_;
   int additional_callback_count_;
   std::set<GURL> origins_;
   storage::QuotaStatusCode deletion_status_;
   base::WeakPtrFactory<FileSystemQuotaClientTest> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(FileSystemQuotaClientTest);
 };
 
@@ skipping 319 matching lines @@
             GetOriginUsage(quota_client.get(),
                            "https://bar.com/",
                            kPersistent));
   EXPECT_EQ(64 + file_paths_cost_temporary_bar_https,
             GetOriginUsage(quota_client.get(),
                            "https://bar.com/",
                            kTemporary));
 }
 
 }  // namespace content