Cast: Forcing codec initialization on a designated thread

media/cast/video_receiver/video_decoder.cc

Index: media/cast/video_receiver/video_decoder.cc
diff --git a/media/cast/video_receiver/video_decoder.cc b/media/cast/video_receiver/video_decoder.cc
index 03f7a25d44bcf869de63c904a117f93768bd2f44..360cdaa36e9442b9cbdf8d2ad05631ed9b5053d0 100644
--- a/media/cast/video_receiver/video_decoder.cc
+++ b/media/cast/video_receiver/video_decoder.cc
@@ -18,8 +18,7 @@ VideoDecoder::VideoDecoder(const VideoReceiverConfig& video_config,
       vp8_decoder_() {
   switch (video_config.codec) {
     case kVp8:
-      // Initializing to use one core.
-      vp8_decoder_.reset(new Vp8Decoder(1, cast_environment));
+      vp8_decoder_.reset(new Vp8Decoder(cast_environment));
       break;
     case kH264:
       NOTIMPLEMENTED();