The MediaPlayerRenderer is an adapter class that unifies the media::Renderer interface and the Android MediaPlayer interface, and that lives in the Browser process (although this may change in the future).
The MediaPlayerRendererHost is a media::Renderer that lives in the Renderer process. It uses a MojoRenderer to forward calls to a MediaPlayerRenderer in the browser process.
This bug tracks the introduction of both of these classes and their respective factories/helper classes.
Comment 1 by j.iso...@samsung.com
, Aug 8 2016