SW: Propagate errors/exceptions from service worker to browser

content/renderer/service_worker/embedded_worker_context_client.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/service_worker/embedded_worker_context_client.h"
 
 #include "base/lazy_instance.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/pickle.h"
 #include "base/threading/thread_local.h"
@@ skipping 136 matching lines @@
   // At this point OnWorkerRunLoopStopped is already called, so
   // worker_task_runner_->RunsTasksOnCurrentThread() returns false
   // (while we're still on the worker thread).
   script_context_.reset();
   main_thread_proxy_->PostTask(
       FROM_HERE,
       base::Bind(&CallWorkerContextDestroyedOnMainThread,
                  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, GURL(source_url)));
+}
+
 void EmbeddedWorkerContextClient::didHandleActivateEvent(
     int request_id,
     blink::WebServiceWorkerEventResult result) {
   DCHECK(script_context_);
   script_context_->DidHandleActivateEvent(request_id, result);
 }
 
 void EmbeddedWorkerContextClient::didHandleInstallEvent(
     int request_id,
     blink::WebServiceWorkerEventResult result) {
@@ skipping 60 matching lines @@
 }
 
 void EmbeddedWorkerContextClient::SendWorkerStarted() {
   DCHECK(worker_task_runner_->RunsTasksOnCurrentThread());
   sender_->Send(new EmbeddedWorkerHostMsg_WorkerStarted(
       WorkerTaskRunner::Instance()->CurrentWorkerId(),
       embedded_worker_id_));
 }
 
 }  // namespace content