Merge branch '8.1.x' into dpetev/combo-control-touched-8.1

Author: nrobakova

.travis.yml

@@ -1,11 +1,7 @@
 sudo: required
 dist: xenial
 addons:
-  apt:
-    sources:
-      - google-chrome
-    packages:
-      - google-chrome-stable
+  chrome: stable
 services:
   - xvfb
 language: node_js

projects/igniteui-angular/karma.conf.js

@@ -38,7 +38,7 @@ module.exports = function (config) {
     colors: true,
     logLevel: config.LOG_INFO,
     autoWatch: true,
-    browsers: ['Chrome'],
+    browsers: ['ChromeHeadless'],
     singleRun: false
   });
 };