Fix two notification update issues on page navigation

content/browser/media/session/media_session_service_impl.cc

Index: content/browser/media/session/media_session_service_impl.cc
diff --git a/content/browser/media/session/media_session_service_impl.cc b/content/browser/media/session/media_session_service_impl.cc
index cf452e2204df634b8f8e29dc8b873006c40c9484..524399dfcf10bce162b0855ee13d44f09f109be0 100644
--- a/content/browser/media/session/media_session_service_impl.cc
+++ b/content/browser/media/session/media_session_service_impl.cc
@@ -43,6 +43,14 @@ RenderFrameHost* MediaSessionServiceImpl::GetRenderFrameHost() {
                                  render_frame_routing_id_);
 }
 
+void MediaSessionServiceImpl::DidFinishNavigation() {
+  // At this point the BrowsingContext of the frame has changed, so the members
+  // need to be reset, and notify MediaSessionImpl.
+  SetPlaybackState(blink::mojom::MediaSessionPlaybackState::NONE);
+  SetMetadata(base::nullopt);
+  ClearActions();
+}
+
 void MediaSessionServiceImpl::SetClient(
     blink::mojom::MediaSessionClientPtr client) {
   client_ = std::move(client);
@@ -92,6 +100,13 @@ void MediaSessionServiceImpl::DisableAction(
     session->OnMediaSessionActionsChanged(this);
 }
 
+void MediaSessionServiceImpl::ClearActions() {
+  actions_.clear();
+  MediaSessionImpl* session = GetMediaSession();
+  if (session)
+    session->OnMediaSessionActionsChanged(this);
+}
+
 MediaSessionImpl* MediaSessionServiceImpl::GetMediaSession() {
   RenderFrameHost* rfh = GetRenderFrameHost();
   if (!rfh)