Add CdmService to keep track of CDMs

content/public/common/cdm_info.h

+// Copyright 2016 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 CONTENT_PUBLIC_COMMON_CDM_INFO_H_
+#define CONTENT_PUBLIC_COMMON_CDM_INFO_H_
+
+#include <string>
+#include <vector>
+
+#include "base/files/file_path.h"
+#include "base/version.h"
+#include "content/common/content_export.h"
+
+namespace content {
+
+// Represents a Content Decryption Module implementation and its capabilities.
+struct CONTENT_EXPORT CdmInfo {
+  CdmInfo(const std::string& type,
+          const base::Version& version,
+          const base::FilePath& path,
+          const std::vector<std::string>& supported_codecs);
+  ~CdmInfo();
+
+  // Type of the CDM (e.g. Widevine).
+  std::string type;
+
+  // Version of the CDM. May be empty if the version is not known.
+  base::Version version;
+
+  // Path to the library implementing the CDM. May be empty if the
+  // CDM is not a separate library (e.g. Widevine on Android).
+  base::FilePath path;
+
+  // List of codecs supported by the CDM (e.g. vp8).
+  // TODO(jrummell): use the enums from media::AudioCodec and media::VideoCodec
+  // instead of strings.
+  std::vector<std::string> supported_codecs;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_PUBLIC_COMMON_CDM_INFO_H_