fix(elements): add compiler to integration (angular#24861)

PR Close angular#24861

Author: robwormald

integration/ng_elements/closure.conf

@@ -24,6 +24,9 @@ node_modules/zone.js/dist/zone_externs.js
 --js node_modules/@angular/core/fesm2015/core.js
 --js node_modules/@angular/core/src/testability/testability.externs.js
 
+--js node_modules/@angular/compiler/package.json
+--js node_modules/@angular/compiler/fesm2015/common.js
+
 --js node_modules/@angular/common/package.json
 --js node_modules/@angular/common/fesm2015/common.js