Pass key_information on SessionKeysChange message

media/base/cdm_key_information.h

+// Copyright 2015 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_BASE_CDM_KEY_INFORMATION_H_
+#define MEDIA_BASE_CDM_KEY_INFORMATION_H_
+
+#include <string>
+#include <vector>
+
+#include "base/basictypes.h"
+#include "media/base/media_export.h"
+
+namespace media {
+
+struct MEDIA_EXPORT CdmKeyInformation {
+  enum KeyStatus {
+    USABLE = 0,
+    INTERNAL_ERROR = 1,
+    EXPIRED = 2,
+    OUTPUT_NOT_ALLOWED = 3
+  };
+
+  CdmKeyInformation();
+  ~CdmKeyInformation();
+
+  std::vector<uint8> key_id;
+  KeyStatus status;
+  uint32 system_code;
+};
+
+}  // namespace media
+
+#endif  // MEDIA_BASE_CDM_KEY_INFORMATION_H_