core(asset-saver): minor fix for logAssets (#4088)

lighthouse-core/lib/asset-saver.js

@@ -208,13 +208,13 @@ function saveAssets(artifacts, audits, pathWithBasename) {
 function logAssets(artifacts, audits) {
   return prepareAssets(artifacts, audits).then(assets => {
     assets.map(data => {
-      log.log('devtoolslog-${data.passName}.json', data.devtoolsLog);
+      log.log(`devtoolslog-${data.passName}.json`, data.devtoolsLog);
       const traceIter = traceJsonGenerator(data.traceData);
       let traceJson = '';
       for (const trace of traceIter) {
         traceJson += trace;
       }
-      log.log('trace-${data.passName}.json', traceJson);
+      log.log(`trace-${data.passName}.json`, traceJson);
     });
   });
 }

lighthouse-extension/app/src/lighthouse-background.js

@@ -160,8 +160,8 @@ window.runLighthouseAsInCLI = function(connection, url, options, categoryIDs) {
       if (options && options.logAssets) {
         promise = promise.then(_ => assetSaver.logAssets(results.artifacts, results.audits));
       }
-      filterOutArtifacts(results);
       return promise.then( _ => {
+        filterOutArtifacts(results);
         const json = options && options.outputFormat === 'json';
         return json ? JSON.stringify(results) : new ReportGeneratorV2().generateReportHtml(results);
       });