Expose and check origin of request in response for foreign fetch.

third_party/WebKit/Source/web/ServiceWorkerGlobalScopeProxy.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 129 matching lines @@
     eventInit.setRequest(request);
     eventInit.setClientId(webRequest.isMainResourceLoad() ? WebString() : webRequest.clientId());
     eventInit.setIsReload(webRequest.isReload());
     FetchEvent* fetchEvent = FetchEvent::create(EventTypeNames::fetch, eventInit, observer);
     DispatchEventResult dispatchResult = workerGlobalScope()->dispatchEvent(fetchEvent);
     observer->didDispatchEvent(dispatchResult);
 }
 
 void ServiceWorkerGlobalScopeProxy::dispatchForeignFetchEvent(int eventID, const WebServiceWorkerRequest& webRequest)
 {
-    ForeignFetchRespondWithObserver* observer = ForeignFetchRespondWithObserver::create(workerGlobalScope(), eventID, webRequest.url(), webRequest.mode(), webRequest.frameType(), webRequest.requestContext());
+    RefPtr<SecurityOrigin> origin = SecurityOrigin::create(webRequest.referrerUrl());
+    ForeignFetchRespondWithObserver* observer = ForeignFetchRespondWithObserver::create(workerGlobalScope(), eventID, webRequest.url(), webRequest.mode(), webRequest.frameType(), webRequest.requestContext(), origin);
     Request* request = Request::create(workerGlobalScope()->scriptController()->getScriptState(), webRequest);
     request->getHeaders()->setGuard(Headers::ImmutableGuard);
     ForeignFetchEventInit eventInit;
     eventInit.setCancelable(true);
     eventInit.setRequest(request);
+    eventInit.setOrigin(origin->toString());
     ForeignFetchEvent* fetchEvent = ForeignFetchEvent::create(EventTypeNames::foreignfetch, eventInit, observer);
     DispatchEventResult dispatchResult = workerGlobalScope()->dispatchEvent(fetchEvent);
     observer->didDispatchEvent(dispatchResult);
 }
 
 void ServiceWorkerGlobalScopeProxy::dispatchInstallEvent(int eventID)
 {
     WaitUntilObserver* observer = WaitUntilObserver::create(workerGlobalScope(), WaitUntilObserver::Install, eventID);
     Event* event;
     if (RuntimeEnabledFeatures::foreignFetchEnabled())
@@ skipping 122 matching lines @@
     return *m_document;
 }
 
 ServiceWorkerGlobalScope* ServiceWorkerGlobalScopeProxy::workerGlobalScope() const
 {
     DCHECK(m_workerGlobalScope);
     return m_workerGlobalScope;
 }
 
 } // namespace blink