Implement checks for distinctiveIdentifier and persistentState in requestMediaKeySystemAccess().

media/base/eme_constants.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 MEDIA_BASE_EME_CONSTANTS_H_
 #define MEDIA_BASE_EME_CONSTANTS_H_
 
 #include <stdint.h>
 
 namespace media {
@@ skipping 31 matching lines @@
   EME_CODEC_MP4_ALL = (EME_CODEC_MP4_AUDIO_ALL | EME_CODEC_MP4_VIDEO_ALL),
   EME_CODEC_ALL = (EME_CODEC_WEBM_ALL | EME_CODEC_MP4_ALL),
 #else
   EME_CODEC_ALL = EME_CODEC_WEBM_ALL,
 #endif  // defined(USE_PROPRIETARY_CODECS)
 };
 
 typedef uint32_t SupportedInitDataTypes;
 typedef uint32_t SupportedCodecs;
 
+enum EmeSessionTypeSupport {
+  // Invalid default value.
+  EME_SESSION_TYPE_INVALID,
+  // The session type is not supported.
+  EME_SESSION_TYPE_NOT_SUPPORTED,
+  // The session type is supported if the encrypted media permission is granted.
+  EME_SESSION_TYPE_SUPPORTED_WITH_PERMISSION,
+  // The session type is always supported.
+  EME_SESSION_TYPE_SUPPORTED,
+};
+
+enum EmeFeatureSupport {
+  // Invalid default value.
+  EME_FEATURE_INVALID,
+  // Access to the feature is not supported at all.
+  EME_FEATURE_NOT_SUPPORTED,
+  // Access to the feature may be requested if the encrypted media permission is
+  // granted.
+  EME_FEATURE_REQUESTABLE_WITH_PERMISSION,
+  // Access to the feature may be requested.
+  EME_FEATURE_REQUESTABLE,
+  // Access to the feature cannot be blocked.
+  EME_FEATURE_ALWAYS_ENABLED,
+};
+
+enum EmeFeatureRequirement {
+  EME_FEATURE_NOT_ALLOWED,
+  EME_FEATURE_OPTIONAL,
+  EME_FEATURE_REQUIRED,
+};
+
 }  // namespace media
 
 #endif  // MEDIA_BASE_EME_CONSTANTS_H_