SW: Propagate errors/exceptions from service worker to browser

content/renderer/service_worker/embedded_worker_context_client.cc

Index: content/renderer/service_worker/embedded_worker_context_client.cc
diff --git a/content/renderer/service_worker/embedded_worker_context_client.cc b/content/renderer/service_worker/embedded_worker_context_client.cc
index 337cfaa7d085e55252e6b9d7c93dca6d37340324..453ac3017604c780dc2d32bb937bd88668575db7 100644
--- a/content/renderer/service_worker/embedded_worker_context_client.cc
+++ b/content/renderer/service_worker/embedded_worker_context_client.cc
@@ -153,6 +153,16 @@ void EmbeddedWorkerContextClient::workerContextDestroyed() {
                  embedded_worker_id_));
 }
 
+void EmbeddedWorkerContextClient::reportException(
+    const blink::WebString& error_message,
+    int line_number,
+    int column_number,
+    const blink::WebString& source_url) {
+  sender_->Send(new EmbeddedWorkerHostMsg_ReportException(
+      embedded_worker_id_, error_message, line_number,
+      column_number, source_url));
+}
+
 void EmbeddedWorkerContextClient::didHandleActivateEvent(
     int request_id,
     blink::WebServiceWorkerEventResult result) {