Add wrapper class to media for support of VP9 video, and add a command line flag to enable the support.

This initial version of the wrapper provides support for decoding VP9 video in WebM container files, and is disabled by default.

New flag added: --enable-vp9-playback

TBR=brettw,scherkus,xhwang
BUG=166094
TEST=VP9 video in WebM containers plays back in <video> elements when --enable-vp9-playback is specified on the command line.


Review URL: https://chromiumcodereview.appspot.com/12045060

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@178799 0039d316-1c4b-4281-b951-d872f2087c98
12 files changed