Add 4 VP9 profiles to the media::VideoCodecProfile enum.

media/ffmpeg/ffmpeg_common.cc

Index: media/ffmpeg/ffmpeg_common.cc
diff --git a/media/ffmpeg/ffmpeg_common.cc b/media/ffmpeg/ffmpeg_common.cc
index 51e8884fedb1b35fab80b24e13abda6ae4c8f688..3c5b8920d934ad402c1dfa840c03ef2425808e7f 100644
--- a/media/ffmpeg/ffmpeg_common.cc
+++ b/media/ffmpeg/ffmpeg_common.cc
@@ -457,7 +457,8 @@ bool AVStreamToVideoDecoderConfig(const AVStream* stream,
   if (codec == kCodecVP8)
     profile = VP8PROFILE_ANY;
   else if (codec == kCodecVP9)
-    profile = VP9PROFILE_ANY;
+    // TODO(servolk): Find a way to obtain VP9 profile from FFmpeg.
+    profile = VP9PROFILE_PROFILE0;
   else
     profile = ProfileIDToVideoCodecProfile(stream->codec->profile);