Implement support for vp9 in ISO-BMFF

media/test/data/README

Index: media/test/data/README
diff --git a/media/test/data/README b/media/test/data/README
index c445e955cc9060da772182b4cace70d7f6274ade..ddd93b2c7f23af8410be710e16afc975ad204315 100644
--- a/media/test/data/README
+++ b/media/test/data/README
@@ -57,6 +57,8 @@ bear-1280x720-v_frag-cenc.mp4 - A fragmented MP4 version of the video track of b
 bear-1280x720-v_frag-cenc-key_rotation.mp4 - A fragmented MP4 version of the video track of bear-1280x720.mp4 encrypted (ISO CENC) using key ID [1] and key [2] with key rotation [3].
 bear-1280x720-v_frag-cenc_clear-all.mp4 - Same as bear-1280x720-v_frag-cenc.mp4 but no fragments are encrypted.
 bear-1280x720-a_frag-cenc_missing-saiz-saio.mp4 - An invalid file similar to bear-1280x720-a_frag-cenc.mp4 but has no saiz and saio boxes. To save space, it has only one encrypted sample.
+bear-320x240-v_frag-vp9.mp4 - Bear video with VP9 codec in MP4 container.

[ddorwin, 2016/04/18 22:53:29]

Please provide instructions for creating these. (The others in this list are not
good examples, but we're trying to do better.) See examples below.

[kqyang, 2016/04/19 00:28:05]

Done.

+bear-320x240-v_frag-vp9-cenc.mp4 - Same as above, with video encrypted using key ID [1] and key [2].
 bear-320x240-16x9-aspect-av_enc-av.webm - bear-320x240-16x9-aspect.webm with audio & video encrypted using key ID [1] and key [2]
 bear-320x240-av_enc-av.webm - bear-320x240.webm with audio & video encrypted using key ID [1] and key [2].
 bear-320x240-av_enc-av_clear-1s.webm - Same as bear-320x240-av_enc-av.webm but with no frames in the first second encrypted.