Add CDM FileIO tests.

media/cdm/ppapi/cdm_file_io_test.h

+// 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.
+
+#ifndef MEDIA_CDM_PPAPI_CDM_FILE_IO_TEST_H_
+#define MEDIA_CDM_PPAPI_CDM_FILE_IO_TEST_H_
+
+#include "base/callback.h"
+#include "base/compiler_specific.h"
+#include "media/cdm/ppapi/api/content_decryption_module.h"
+
+namespace media {
+
+class CdmFileIOTest : public cdm::CdmFileIOClient {

[ddorwin, 2013/12/04 05:27:08]

Please explain how this is intended to be do. It's not a normal "test". I assume
it's supposed to be included in a CDM for testing.
How does it work? Especially for detecting failures other than via logging.

[xhwang, 2013/12/10 01:24:25]

Done.

+ public:
+  typedef base::Callback<void(bool success)> CompletionCB;
+
+  CdmFileIOTest();
+  virtual ~CdmFileIOTest();
+
+  // cdm::CdmFileIOClient implementation.
+  virtual void OnOpenComplete(Status status) OVERRIDE;
+  virtual void OnReadComplete(Status status,
+                              const uint8_t* data, uint32_t data_size) OVERRIDE;
+  virtual void OnWriteComplete(Status status) OVERRIDE;
+
+  void Run(cdm::CdmFileIO* cdm_file_io, CompletionCB completion_cb);
+
+ private:
+  void OnTestComplete(bool success);
+
+  cdm::CdmFileIO* cdm_file_io_;
+  CompletionCB completion_cb_;
+
+  std::vector<uint8_t> test_data_;
+
+  DISALLOW_COPY_AND_ASSIGN (CdmFileIOTest);
+};
+
+}  // namespace media
+
+#endif  // MEDIA_CDM_PPAPI_CDM_FILE_IO_TEST_H_