Update Error Event inside a worker to provide the exact exception value

third_party/WebKit/LayoutTests/http/tests/serviceworker/ServiceWorkerGlobalScope/resources/error-worker-script.js

Index: third_party/WebKit/LayoutTests/http/tests/serviceworker/ServiceWorkerGlobalScope/resources/error-worker-script.js
diff --git a/third_party/WebKit/LayoutTests/http/tests/serviceworker/ServiceWorkerGlobalScope/resources/error-worker-script.js b/third_party/WebKit/LayoutTests/http/tests/serviceworker/ServiceWorkerGlobalScope/resources/error-worker-script.js
new file mode 100644
index 0000000000000000000000000000000000000000..73f55c06b72bac181be3f921da9e126c7bbbe9d4
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/http/tests/serviceworker/ServiceWorkerGlobalScope/resources/error-worker-script.js
@@ -0,0 +1,10 @@
+var source;
+
+self.addEventListener('message', function(e) {
+  source = e.source;
+  throw 'testError';
+});
+
+self.addEventListener('error', function(e) {
+  source.postMessage({ value: e.error });

[nhiroki, 2017/04/06 01:50:35]

How about testing other attributes of ErrorEvent if we don't have such a test
for service workers?

[yiyix, 2017/04/06 04:38:19]

Done.

+});