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

content/renderer/service_worker/service_worker_script_context.cc

Index: content/renderer/service_worker/service_worker_script_context.cc
diff --git a/content/renderer/service_worker/service_worker_script_context.cc b/content/renderer/service_worker/service_worker_script_context.cc
index b94323e62556ce62729ef8b7e00773aa4920f142..f1b8d751aa69e92678b7c8d0dc1959fee51d6eaa 100644
--- a/content/renderer/service_worker/service_worker_script_context.cc
+++ b/content/renderer/service_worker/service_worker_script_context.cc
@@ -486,7 +486,9 @@ void ServiceWorkerScriptContext::OnOpenWindowResponse(
   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 =
@@ -498,7 +500,7 @@ void ServiceWorkerScriptContext::OnOpenWindowError(int request_id) {
   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);
 }