- delegate_->EnumerateTargets(
- base::Bind(&DevToolsHttpHandlerImpl::OnTargetListReceived,
- this, connection_id, host));
+ DevToolsManagerDelegate* manager_delegate =
+ DevToolsManager::GetInstance()->delegate();
+ if (manager_delegate) {
+ manager_delegate->EnumerateTargets(
+ base::Bind(&DevToolsHttpHandlerImpl::OnTargetListReceived,
+ this, connection_id, host));
+ } else {
+ DevToolsManagerDelegate::TargetList empty_list;
+ OnTargetListReceived(connection_id, host, empty_list);
+ }