Add a commend line parameter for disabling VP9 decoder support
Apps can use
MediaSource.isTypeSupported('video/webm; codecs="vp9"')
to determine whether VP9 is supported or not. In Cast for ATV,
software VP9 decoder is too slow, so we should return true only
when a hardware VP9 decoder is availiable.
Since render processes can't access MediaCodec, The hardware VP9
availability is aquired from browser process and passed to render
processes via command line parameters.
BUG=none
Review-Url: https://codereview.chromium.org/2052093003
Cr-Commit-Position: refs/heads/master@{#399778}
3 files changed
