WebM support for new multipart VP9 string.

content/renderer/media/render_media_client.h

Index: content/renderer/media/render_media_client.h
diff --git a/content/renderer/media/render_media_client.h b/content/renderer/media/render_media_client.h
index 0f05ceac2f2edb1d0dd0f2316c27ce7db06559b4..19e734148e485259a89100a8ae0ab998be40b096 100644
--- a/content/renderer/media/render_media_client.h
+++ b/content/renderer/media/render_media_client.h
@@ -30,9 +30,7 @@ class CONTENT_EXPORT RenderMediaClient : public media::MediaClient {
       std::vector<std::unique_ptr<media::KeySystemProperties>>*
           key_systems_properties) final;
   void RecordRapporURL(const std::string& metric, const GURL& url) final;
-  bool IsSupportedVideoConfig(media::VideoCodec codec,
-                              media::VideoCodecProfile profile,
-                              int level) override;
+  bool IsSupportedVideoConfig(const media::VideoConfig& config) override;
 
   void SetTickClockForTesting(std::unique_ptr<base::TickClock> tick_clock);