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

Source/modules/serviceworkers/ServiceWorkerClients.cpp

Index: Source/modules/serviceworkers/ServiceWorkerClients.cpp
diff --git a/Source/modules/serviceworkers/ServiceWorkerClients.cpp b/Source/modules/serviceworkers/ServiceWorkerClients.cpp
index cb15214cdb0457344b218ce07a643314c783f57a..5f4118b3f5da0b89bdad9050f0405bfd33f66f4f 100644
--- a/Source/modules/serviceworkers/ServiceWorkerClients.cpp
+++ b/Source/modules/serviceworkers/ServiceWorkerClients.cpp
@@ -128,8 +128,8 @@ ScriptPromise ServiceWorkerClients::openWindow(ScriptState* scriptState, const S
         return promise;
     }
 
-    if (!context->securityOrigin()->canRequest(parsedUrl)) {
-        resolver->reject(DOMException::create(SecurityError, "'" + parsedUrl.elidedString() + "' is not same-origin with the Worker."));
+    if (!context->securityOrigin()->canDisplay(parsedUrl)) {
+        resolver->reject(DOMException::create(SecurityError, "'" + parsedUrl.elidedString() + "' cannot be opened."));
         return promise;
     }