Split MediaSessionStateChanged() and MediaSessionMetadataChanged()

content/browser/web_contents/web_contents_impl.h

Index: content/browser/web_contents/web_contents_impl.h
diff --git a/content/browser/web_contents/web_contents_impl.h b/content/browser/web_contents/web_contents_impl.h
index 68278ee11eeb574c1ead18f36b2f065fc21daf93..e57408e5957da0e7f89969da009f5ba8c26c6600 100644
--- a/content/browser/web_contents/web_contents_impl.h
+++ b/content/browser/web_contents/web_contents_impl.h
@@ -414,7 +414,6 @@ class CONTENT_EXPORT WebContentsImpl
   void GetManifest(const GetManifestCallback& callback) override;
   void ExitFullscreen(bool will_cause_resize) override;
   void ResumeLoadingCreatedWebContents() override;
-  void OnMediaSessionStateChanged();
   void ResumeMediaSession() override;
   void SuspendMediaSession() override;
   void StopMediaSession() override;
@@ -432,6 +431,13 @@ class CONTENT_EXPORT WebContentsImpl
   bool GetAllowOtherViews() override;
 #endif
 
+  // This method is called when the MediaSession state has changed, and will
+  // notify the WebContents observers.
+  void OnMediaSessionStateChanged();
+  // This method is called when the MediaSession metadata has changed, and will
+  // notify the WebContents observers.
+  void OnMediaSessionMetadataChanged();
+
   // Implementation of PageNavigator.
   WebContents* OpenURL(const OpenURLParams& params) override;