WebM support for new multipart VP9 string.

chromecast/common/media/cast_media_client.h

Index: chromecast/common/media/cast_media_client.h
diff --git a/chromecast/common/media/cast_media_client.h b/chromecast/common/media/cast_media_client.h
index a53acb350eff7c30a6bf5953a2435d2e7e0e4ff0..ac5b0f33474fde6d253787e44f1e314c3f5b3bc6 100644
--- a/chromecast/common/media/cast_media_client.h
+++ b/chromecast/common/media/cast_media_client.h
@@ -30,9 +30,7 @@ class CastMediaClient : public ::media::MediaClient {
       std::vector<std::unique_ptr<::media::KeySystemProperties>>*
           key_systems_properties) override;
   void RecordRapporURL(const std::string& metric, const GURL& url) override;
-  bool IsSupportedVideoConfig(::media::VideoCodec codec,
-                              ::media::VideoCodecProfile profile,
-                              int level) override;
+  bool IsSupportedVideoConfig(const ::media::VideoConfig& config) override;
 
  private:
   friend struct base::LazyInstanceTraitsBase<CastMediaClient>;