Bug 1587364 - [marionette] Use `getWebDriverBrowserName()` to determine the `browserName` capability. r=webdriver-reviewers,ato

Differential Revision: https://phabricator.services.mozilla.com/D48676

--HG--
extra : moz-landing-system : lando

testing/marionette/capabilities.js

@@ -435,7 +435,7 @@ class Capabilities extends Map {
   constructor() {
     super([
       // webdriver
-      ["browserName", appinfo.name],
+      ["browserName", getWebDriverBrowserName()],
       ["browserVersion", appinfo.version],
       ["platformName", getWebDriverPlatformName()],
       ["platformVersion", Services.sysinfo.getProperty("version")],