Store SupportedCodecs in KeySystemInfo and KeySystems.

content/public/common/encrypted_media_codecs.h

+// Copyright 2014 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_ENCRYPTED_MEDIA_CODECS_H_
+#define CONTENT_PUBLIC_COMMON_ENCRYPTED_MEDIA_CODECS_H_
+
+namespace content {
+
+// Defines bitmask values used to specify supported codecs.
+// Each value represents a codec within a specific container.
+// The mask values are stored in a SupportedCodecs.
+enum SupportedCodecMask {

[jam, 2014/04/24 16:21:06]

see the convention for enums in the content api
http://www.chromium.org/developers/content-module/content-api

this should be
enum EncryptedMediaCodec {
  ENCRYPTED_MEDIA_CODEC_NONE,
  ENCRYPTED_MEDIA_CODE_WEBM_VORBIS,
...

[xhwang, 2014/04/24 17:08:21]

Done.

+  NO_CODECS = 0,
+  WEBM_VORBIS = 1 << 0,
+  WEBM_AUDIO_CODECS = WEBM_VORBIS,
+  WEBM_VP8 = 1 << 1,
+  WEBM_VIDEO_CODECS = WEBM_VP8,
+  WEBM_ALL_CODECS = (WEBM_AUDIO_CODECS | WEBM_VIDEO_CODECS),
+#if defined(USE_PROPRIETARY_CODECS)
+  MP4_AAC = 1 << 2,
+  MP4_AUDIO_CODECS = MP4_AAC,
+  MP4_AVC1 = 1 << 3,
+  MP4_VIDEO_CODECS = MP4_AVC1,
+  MP4_ALL_CODECS = (MP4_AUDIO_CODECS | MP4_VIDEO_CODECS),
+  ALL_CODECS = (WEBM_ALL_CODECS | MP4_ALL_CODECS),
+#else
+  ALL_CODECS = WEBM_ALL_CODECS,
+#endif  // defined(USE_PROPRIETARY_CODECS)
+};
+
+typedef uint32 SupportedCodecs;
+
+}  // namespace content
+
+#endif  // CONTENT_PUBLIC_COMMON_ENCRYPTED_MEDIA_CODECS_H_