after save workspace: remove untitled WS and add to recent

src/vs/platform/workspaces/node/workspacesIpc.ts

@@ -32,6 +32,11 @@ export class WorkspacesChannel implements IServerChannel {
 
 				return this.service.createUntitledWorkspace(folders);
 			}
+			case 'deleteIfUntitledWorkspace': {
+				const rawWorkspace: IWorkspaceIdentifier = arg;
+				// TODO aeschli: resolve IWorkspaceIdentifier when switching to URI
+				return this.service.deleteIfUntitledWorkspace(rawWorkspace);
+			}
 		}
 
 		throw new Error(`Call not found: ${command}`);
@@ -47,4 +52,8 @@ export class WorkspacesChannelClient implements IWorkspacesService {
 	createUntitledWorkspace(folders?: IWorkspaceFolderCreationData[]): Promise<IWorkspaceIdentifier> {
 		return this.channel.call('createUntitledWorkspace', folders);
 	}
+
+	deleteIfUntitledWorkspace(workspace: IWorkspaceIdentifier): Promise<void> {
+		return this.channel.call('deleteIfUntitledWorkspace', workspace);
+	}
 }