Relax same-origin policy for ServiceWorker openWindow() in Chromium.

content/renderer/service_worker/service_worker_script_context.cc

 // Copyright 2014 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/service_worker_script_context.h"
 
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/trace_event/trace_event.h"
 #include "content/child/notifications/notification_data_conversions.h"
@@ skipping 468 matching lines @@
   scoped_ptr<blink::WebServiceWorkerClientInfo> web_client;
   if (!client.IsEmpty()) {
     DCHECK(client.IsValid());
     web_client.reset(new blink::WebServiceWorkerClientInfo(
         ToWebServiceWorkerClientInfo(client)));
   }
   callbacks->onSuccess(web_client.release());
   pending_client_callbacks_.Remove(request_id);
 }
 
-void ServiceWorkerScriptContext::OnOpenWindowError(int request_id) {
+void ServiceWorkerScriptContext::OnOpenWindowError(
+    int request_id,
+    const std::string& message) {
   TRACE_EVENT0("ServiceWorker",
                "ServiceWorkerScriptContext::OnOpenWindowError");
   blink::WebServiceWorkerClientCallbacks* callbacks =
       pending_client_callbacks_.Lookup(request_id);
   if (!callbacks) {
     NOTREACHED() << "Got stray response: " << request_id;
     return;
   }
   scoped_ptr<blink::WebServiceWorkerError> error(
       new blink::WebServiceWorkerError(
           blink::WebServiceWorkerError::ErrorTypeUnknown,
-          "Something went wrong while trying to open the window."));
+          blink::WebString::fromLatin1(message)));

[falken, 2015/03/08 12:23:49]

nit: WebString::fromUTF8() is much more widely used, I'd only use fromLatin1 if
you're converting a hard-coded string or it's really perf sensitive code and
you're absolutely sure you can never have a UTF8 string. That's actually not the
case here: url.spec() can be UTF8.

[mlamouri (slow - plz ping), 2015/03/08 14:34:12]

Done.

   callbacks->onError(error.release());
   pending_client_callbacks_.Remove(request_id);
 }
 
 void ServiceWorkerScriptContext::OnFocusClientResponse(
     int request_id, const ServiceWorkerClientInfo& client) {
   TRACE_EVENT0("ServiceWorker",
                "ServiceWorkerScriptContext::OnFocusClientResponse");
   blink::WebServiceWorkerClientCallbacks* callback =
       pending_client_callbacks_.Lookup(request_id);
@@ skipping 60 matching lines @@
       new blink::WebServiceWorkerError(error_type, message));
   callbacks->onError(error.release());
   pending_claim_clients_callbacks_.Remove(request_id);
 }
 
 void ServiceWorkerScriptContext::OnPing() {
   Send(new ServiceWorkerHostMsg_Pong(GetRoutingID()));
 }
 
 }  // namespace content