SW: Propagate errors/exceptions from service worker to browser

content/browser/service_worker/service_worker_dispatcher_host.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/browser/service_worker/service_worker_dispatcher_host.h"
 
+#include "base/logging.h"
 #include "base/strings/utf_string_conversions.h"
 #include "content/browser/message_port_message_filter.h"
 #include "content/browser/message_port_service.h"
 #include "content/browser/service_worker/embedded_worker_registry.h"
 #include "content/browser/service_worker/service_worker_context_core.h"
 #include "content/browser/service_worker/service_worker_context_wrapper.h"
 #include "content/browser/service_worker/service_worker_registration.h"
 #include "content/browser/service_worker/service_worker_utils.h"
 #include "content/common/service_worker/embedded_worker_messages.h"
 #include "content/common/service_worker/service_worker_messages.h"
@@ skipping 76 matching lines @@
     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_SetVersionId,
                         OnSetHostedVersionId)
     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_PostMessage,
                         OnPostMessage)
     IPC_MESSAGE_HANDLER(EmbeddedWorkerHostMsg_WorkerStarted,
                         OnWorkerStarted)
     IPC_MESSAGE_HANDLER(EmbeddedWorkerHostMsg_WorkerStopped,
                         OnWorkerStopped)
     IPC_MESSAGE_HANDLER(EmbeddedWorkerHostMsg_SendMessageToBrowser,
                         OnSendMessageToBrowser)
+    IPC_MESSAGE_HANDLER(EmbeddedWorkerHostMsg_ReportException,
+                        OnReportException)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
 
   return handled;
 }
 
 void ServiceWorkerDispatcherHost::OnRegisterServiceWorker(
     int32 thread_id,
     int32 request_id,
     const GURL& pattern,
@@ skipping 171 matching lines @@
 void ServiceWorkerDispatcherHost::OnSendMessageToBrowser(
     int embedded_worker_id,
     int request_id,
     const IPC::Message& message) {
   if (!context_)
     return;
   context_->embedded_worker_registry()->OnSendMessageToBrowser(
       embedded_worker_id, request_id, message);
 }
 
+void ServiceWorkerDispatcherHost::OnReportException(
+    int embedded_worker_id,
+    const base::string16& error_message,
+    int line_number,
+    int column_number,
+    const GURL& source_url) {
+  // TODO(horo, nhiroki): Show the error on serviceworker-internals
+  // (http://crbug.com/359517).
+  DVLOG(2) << "[Error] " << error_message << " (" << source_url
+           << ":" << line_number << "," << column_number << ")";
+}
+
 void ServiceWorkerDispatcherHost::UnregistrationComplete(
     int32 thread_id,
     int32 request_id,
     ServiceWorkerStatusCode status) {
   if (status != SERVICE_WORKER_OK) {
     SendRegistrationError(thread_id, request_id, status);
     return;
   }
 
   Send(new ServiceWorkerMsg_ServiceWorkerUnregistered(thread_id, request_id));
 }
 
 void ServiceWorkerDispatcherHost::SendRegistrationError(
     int32 thread_id,
     int32 request_id,
     ServiceWorkerStatusCode status) {
   base::string16 error_message;
   blink::WebServiceWorkerError::ErrorType error_type;
   GetServiceWorkerRegistrationStatusResponse(
       status, &error_type, &error_message);
   Send(new ServiceWorkerMsg_ServiceWorkerRegistrationError(
       thread_id, request_id, error_type, error_message));
 }
 
 }  // namespace content