Include which browser args/preferences/trace configuration where used…

lib/core/engine/index.js

@@ -10,7 +10,7 @@ import {
   addConnectivity,
   removeConnectivity
 } from '../../connectivity/index.js';
-import { logResultLogLine, getProperty } from '../../support/util.js';
+import { logResultLogLine, getProperty, toArray } from '../../support/util.js';
 import {
   getFullyLoaded,
   getMainDocumentTimings,
@@ -30,6 +30,8 @@ import {
   loadPageCompleteScript
 } from '../../support/engineUtils.js';
 import { getAvailablePort } from '../../support/getPort.js';
+import { traceCategories as defaultChromeTraceCategories } from '../../chrome/settings/traceCategories.js';
+
 const log = getLogger('browsertime');
 const defaults = {
   scripts: [],
@@ -369,6 +371,43 @@ export class Engine {
       for (let result of totalResult) {
         result.info.browser.name = extras.har.log.browser.name;
         result.info.browser.version = extras.har.log.browser.version;
+        if (options.browser === 'firefox' && options.firefox) {
+          result.info.browser.args = options.firefox.args;
+          if (options.firefox.geckoProfiler === true) {
+            result.info.browser.geckProfilerFeatures =
+              options.firefox.geckoProfilerParams.features;
+          }
+          result.info.browser.preference = options.firefox.preference;
+        } else if (options.browser === 'chrome') {
+          if (options.chrome) {
+            result.info.browser.args = options.chrome.args;
+          }
+          if (
+            options.chrome &&
+            (options.cpu || options.chrome.timeline || options.chrome.trace)
+          ) {
+            // get correct trace categories
+            let chromeTraceCategories = options.chrome.traceCategories
+              ? options.chrome.traceCategories.split(',')
+              : [...defaultChromeTraceCategories];
+
+            if (options.chrome.enableTraceScreenshots) {
+              chromeTraceCategories.push(
+                'disabled-by-default-devtools.screenshot'
+              );
+            }
+
+            if (options.chrome && options.chrome.traceCategory) {
+              const extraCategories = toArray(options.chrome.traceCategory);
+              Array.prototype.push.apply(
+                chromeTraceCategories,
+                extraCategories
+              );
+            }
+
+            result.info.browser.traceCategories = chromeTraceCategories;
+          }
+        }
       }
     } else if (options.browser === 'safari') {
       for (let result of totalResult) {