Detect and wrap JS-CustomEvents if applicable. Include created_watcher and

pkg/pkg.status

Index: pkg/pkg.status
diff --git a/pkg/pkg.status b/pkg/pkg.status
index b80d0003f0d89a70c20a57c9d02458fde229e2a5..0d8fafbf5b8150a990c970208711094f3da96bcd 100644
--- a/pkg/pkg.status
+++ b/pkg/pkg.status
@@ -35,6 +35,7 @@ polymer/test/event_path_test: Pass, RuntimeError # Issue 18931
 polymer/test/event_path_declarative_test: Pass, RuntimeError # Issue 18931
 polymer/test/events_test: Pass, RuntimeError # Issue 18931
 polymer/test/instance_attrs_test: Pass, RuntimeError # Issue 18931
+polymer/test/js_custom_event_test: Pass, RuntimeError # Issue 18931
 polymer/test/js_interop_test: Pass, RuntimeError # Issue 18931
 polymer/test/nested_binding_test: Pass, RuntimeError # Issue 18931
 polymer/test/noscript_test: Pass, RuntimeError # Issue 18931
@@ -124,6 +125,7 @@ polymer/test/event_path_declarative_test: Skip #uses dart:html
 polymer/test/event_path_test: Skip #uses dart:html
 polymer/test/events_test: Skip #uses dart:html
 polymer/test/instance_attrs_test: Skip #uses dart:html
+polymer/test/js_custom_event_test: Skip #uses dart:html
 polymer/test/js_interop_test: Skip #uses dart:html
 polymer/test/mirror_loader_test: Skip # uses dart:html
 polymer/test/nested_binding_test: Skip # uses dart:html
@@ -209,6 +211,7 @@ polymer/e2e_test/experimental_boot: Skip
 
 [ $compiler == dart2js && $csp ]
 polymer/test/noscript_test: Fail # Issue 17326
+polymer/test/js_custom_event_test: Fail # Issue 17326
 polymer/test/js_interop_test: Fail # Issue 17326
 
 # This test cannot run under CSP because it is injecting a JavaScript polyfill