Implement MediaMetadata artwork in content

content/browser/web_contents/web_contents_impl.cc

Index: content/browser/web_contents/web_contents_impl.cc
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index d03217ab7fa239efb8f2ae6428e24dae465a32e0..57312a17790d079b984f59e73e960a4b0e35755e 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -3761,8 +3761,7 @@ void WebContentsImpl::OnMediaSessionStateChanged() {
   MediaSession* session = MediaSession::Get(this);
   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
                     MediaSessionStateChanged(session->IsControllable(),
-                                             session->IsSuspended(),
-                                             session->metadata()));
+                                             session->IsSuspended()));
 }
 
 void WebContentsImpl::ResumeMediaSession() {
@@ -3777,6 +3776,12 @@ void WebContentsImpl::StopMediaSession() {
   MediaSession::Get(this)->Stop(MediaSession::SuspendType::UI);
 }
 
+void WebContentsImpl::OnMediaMetadataChanged() {
+  MediaSession* session = MediaSession::Get(this);
+  FOR_EACH_OBSERVER(WebContentsObserver, observers_,
+                    MediaMetadataChanged(session->metadata()));
+}
+
 void WebContentsImpl::OnFirstVisuallyNonEmptyPaint() {
   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
                     DidFirstVisuallyNonEmptyPaint());