Split MediaSessionStateChanged() and MediaSessionMetadataChanged()

chromecast/browser/cast_media_blocker.h

Index: chromecast/browser/cast_media_blocker.h
diff --git a/chromecast/browser/cast_media_blocker.h b/chromecast/browser/cast_media_blocker.h
index 2bb9ab84ddf0c920431ea9dad59302639a167715..042742bd445cc016b22ae836fe00d280eb92b3c9 100644
--- a/chromecast/browser/cast_media_blocker.h
+++ b/chromecast/browser/cast_media_blocker.h
@@ -41,10 +41,8 @@ class CastMediaBlocker : public content::WebContentsObserver {
   };
 
   // content::WebContentsObserver implementation:
-  void MediaSessionStateChanged(
-      bool is_controllable,
-      bool is_suspended,
-      const base::Optional<content::MediaMetadata>& metadata) override;
+  void MediaSessionStateChanged(bool is_controllable,
+                                bool is_suspended) override;
 
   // Whether or not media in the app can be controlled and if media is currently
   // suspended. These variables cache arguments from MediaSessionStateChanged().