refactor(build): support multiple configurable browsers for e2e and perf tests

Also includes browser configuration for Android

scripts/ci/test_e2e.sh

@@ -0,0 +1,30 @@
+#!/bin/bash
+set -e
+
+echo =============================================================================
+# go to project dir
+SCRIPT_DIR=$(dirname $0)
+source $SCRIPT_DIR/env_dart.sh
+cd $SCRIPT_DIR/../..
+
+./node_modules/.bin/webdriver-manager update
+
+function killServer () {
+  kill $serverPid
+}
+
+./node_modules/.bin/gulp serve.js.prod serve.js.dart2js&
+serverPid=$!
+
+trap killServer EXIT
+
+if [[ $PERF_BROWSERS =~ .*Android.* ]]
+then
+  adb usb
+  adb wait-for-device
+  adb reverse tcp:8001 tcp:8001
+  adb reverse tcp:8002 tcp:8002
+fi
+
+./node_modules/.bin/protractor protractor-e2e-js.conf.js --browsers=$E2E_BROWSERS
+./node_modules/.bin/protractor protractor-e2e-dart2js.conf.js --browsers=$E2E_BROWSERS