Merge "NuPlayerDecoder: add synchronous call pause() to ensure decoder will not request or send out data." am: f5ac18d2fd am: 674649bcb5
am: 873ca50c7d

* commit '873ca50c7d590b4a04efc1e9c6ffec566e7e4e24':
  NuPlayerDecoder: add synchronous call pause() to ensure decoder will not request or send out data.