media: Pass CdmContext in decoder reinitialization

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 ba7f188ea0ae58248099397fc594c3a44a4edfb2..d89b0629884eda4908f7b0fc9a9b8848c861b68e 100644
--- a/media/filters/decoder_stream.cc
+++ b/media/filters/decoder_stream.cc
@@ -684,7 +684,7 @@ void DecoderStream<StreamType>::ReinitializeDecoder() {
   state_ = STATE_REINITIALIZING_DECODER;
   // Decoders should not need a new CDM during reinitialization.
   traits_.InitializeDecoder(
-      decoder_.get(), stream_, nullptr,
+      decoder_.get(), stream_, cdm_context_,
       base::Bind(&DecoderStream<StreamType>::OnDecoderReinitialized,
                  weak_factory_.GetWeakPtr()),
       base::Bind(&DecoderStream<StreamType>::OnDecodeOutputReady,