media: Use native CipherMode enum type in media mojo interfaces

media/base/ipc/media_param_traits_macros.h

Index: media/base/ipc/media_param_traits_macros.h
diff --git a/media/base/ipc/media_param_traits_macros.h b/media/base/ipc/media_param_traits_macros.h
index 806d009a00f6843ad9f50f7a6efa63fe0efeeb1e..cb5db84c4b3af2f01e2fd04b9d35da3dfd47e690 100644
--- a/media/base/ipc/media_param_traits_macros.h
+++ b/media/base/ipc/media_param_traits_macros.h
@@ -13,6 +13,7 @@
 #include "media/base/decode_status.h"
 #include "media/base/decryptor.h"
 #include "media/base/demuxer_stream.h"
+#include "media/base/encryption_scheme.h"
 #include "media/base/sample_format.h"
 #include "media/base/subsample_entry.h"
 #include "media/base/video_capture_types.h"
@@ -49,6 +50,9 @@ IPC_ENUM_TRAITS_MAX_VALUE(media::DemuxerStream::Status,
 IPC_ENUM_TRAITS_MAX_VALUE(media::DemuxerStream::Type,
                           media::DemuxerStream::TYPE_MAX)
 
+IPC_ENUM_TRAITS_MAX_VALUE(media::EncryptionScheme::CipherMode,
+                          media::EncryptionScheme::CipherMode::CIPHER_MODE_MAX)
+
 IPC_ENUM_TRAITS_MAX_VALUE(media::SampleFormat, media::kSampleFormatMax)
 
 IPC_ENUM_TRAITS_MAX_VALUE(media::VideoCodec, media::kVideoCodecMax)