Convert //media/filters from scoped_ptr to std::unique_ptr

media/filters/decoder_stream.cc

Index: media/filters/decoder_stream.cc
diff --git a/media/filters/decoder_stream.cc b/media/filters/decoder_stream.cc
index 19ae054d64e7ab73d786a44d5050bca508ca7390..90d5da2b842b7545b8765e7235d6ce0a555dc0fe 100644
--- a/media/filters/decoder_stream.cc
+++ b/media/filters/decoder_stream.cc
@@ -237,8 +237,8 @@ void DecoderStream<StreamType>::SelectDecoder(CdmContext* cdm_context) {
 
 template <DemuxerStream::Type StreamType>
 void DecoderStream<StreamType>::OnDecoderSelected(
-    scoped_ptr<Decoder> selected_decoder,
-    scoped_ptr<DecryptingDemuxerStream> decrypting_demuxer_stream) {
+    std::unique_ptr<Decoder> selected_decoder,
+    std::unique_ptr<DecryptingDemuxerStream> decrypting_demuxer_stream) {
   FUNCTION_DVLOG(2) << ": "
                     << (selected_decoder ? selected_decoder->GetDisplayName()
                                          : "No decoder selected.");