Split MediaSessionStateChanged() and MediaSessionMetadataChanged()

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 6ceef4289ec0a5aafb1a3450fd076b051b6569c9..a8828b5a93c18e5aeaf50b40032c5558636fa786 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -3818,10 +3818,17 @@ void WebContentsImpl::OnUpdateFaviconURL(
 
 void WebContentsImpl::OnMediaSessionStateChanged() {
   MediaSession* session = MediaSession::Get(this);
-  FOR_EACH_OBSERVER(WebContentsObserver, observers_,
-                    MediaSessionStateChanged(session->IsControllable(),
-                                             session->IsSuspended(),
-                                             session->metadata()));
+  for (auto& observer : observers_) {
+    observer.MediaSessionStateChanged(session->IsControllable(),
+                                       session->IsSuspended());
+  }
+}
+
+void WebContentsImpl::OnMediaSessionMetadataChanged() {
+  MediaSession* session = MediaSession::Get(this);
+  for (auto& observer : observers_) {
+    observer.MediaSessionMetadataChanged(session->metadata());
+  }
 }
 
 void WebContentsImpl::ResumeMediaSession() {