test with oter browsers

tests/frontend/travis/remote_runner.js

@@ -92,6 +92,49 @@ sauceTestWorker.push({
   , 'browserName'    : 'firefox'
   , 'version'        : '52.0'
 });
+// 2) Chrome on Linux
+sauceTestWorker.push({
+    'platform'       : 'Windows 7'
+  , 'browserName'    : 'chrome'
+  , 'version'        : '55.0'
+  , 'args'           : ['--use-fake-device-for-media-stream']
+});
+
+// 3) Safari on OSX 10.15
+sauceTestWorker.push({
+    'platform'       : 'OS X 10.15'
+  , 'browserName'    : 'safari'
+  , 'version'        : '13.1'
+});
+
+// 4) Safari on OSX 10.14
+sauceTestWorker.push({
+    'platform'       : 'OS X 10.14'
+  , 'browserName'    : 'safari'
+  , 'version'        : '12.0'
+});
+// IE 10 doesn't appear to be working anyway
+/*
+// 4) IE 10 on Win 8
+sauceTestWorker.push({
+    'platform'       : 'Windows 8'
+  , 'browserName'    : 'iexplore'
+  , 'version'        : '10.0'
+});
+*/
+// 5) Edge on Win 10
+sauceTestWorker.push({
+    'platform'       : 'Windows 10'
+  , 'browserName'    : 'microsoftedge'
+  , 'version'        : '83.0'
+});
+// 6) Firefox on Win 7
+sauceTestWorker.push({
+    'platform'       : 'Windows 7'
+  , 'browserName'    : 'firefox'
+  , 'version'        : '78.0'
+});
+
 
 sauceTestWorker.drain(function() {
   process.exit(allTestsPassed ? 0 : 1);