Modify test case to support streaming operation in sandbox file system.

content/browser/fileapi/obfuscated_file_util_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 <set>
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/file_util.h"
@@ skipping 778 matching lines @@
   FileSystemContext* file_system_context() {
     return sandbox_file_system_.file_system_context();
   }
 
   const base::FilePath& data_dir_path() const {
     return data_dir_.path();
   }
 
  protected:
   base::ScopedTempDir data_dir_;
-  base::MessageLoop message_loop_;
+  base::MessageLoopForIO message_loop_;
   scoped_refptr<MockSpecialStoragePolicy> storage_policy_;
   scoped_refptr<storage::QuotaManager> quota_manager_;
   scoped_refptr<FileSystemContext> file_system_context_;
   GURL origin_;
   storage::FileSystemType type_;
   base::WeakPtrFactory<ObfuscatedFileUtilTest> weak_factory_;
   SandboxFileSystemTestHelper sandbox_file_system_;
   storage::QuotaStatusCode quota_status_;
   int64 usage_;
   storage::MockFileChangeObserver change_observer_;
@@ skipping 1634 matching lines @@
                                    false /* exclusive */,
                                    true /* recursive */));
   ASSERT_EQ(base::File::FILE_ERROR_NOT_A_DIRECTORY,
             ofu()->CreateDirectory(UnlimitedContext().get(),
                                    path_in_file_in_file,
                                    false /* exclusive */,
                                    true /* recursive */));
 }
 
 }  // namespace content