Make Foreign Fetch an origin trial.

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 19 matching lines @@
 
 #include "web/ServiceWorkerGlobalScopeProxy.h"
 
 #include "bindings/core/v8/SourceLocation.h"
 #include "bindings/core/v8/WorkerOrWorkletScriptController.h"
 #include "core/dom/CrossThreadTask.h"
 #include "core/dom/Document.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/dom/MessagePort.h"
 #include "core/inspector/ConsoleMessage.h"
+#include "core/origin_trials/OriginTrials.h"
 #include "core/workers/WorkerGlobalScope.h"
 #include "core/workers/WorkerThread.h"
 #include "modules/background_sync/SyncEvent.h"
 #include "modules/fetch/Headers.h"
 #include "modules/notifications/Notification.h"
 #include "modules/notifications/NotificationEvent.h"
 #include "modules/notifications/NotificationEventInit.h"
 #include "modules/push_messaging/PushEvent.h"
 #include "modules/push_messaging/PushMessageData.h"
 #include "modules/serviceworkers/ExtendableEvent.h"
@@ skipping 97 matching lines @@
     waitUntilObserver->willDispatchEvent();
     DispatchEventResult dispatchResult = workerGlobalScope()->dispatchEvent(fetchEvent);
     respondWithObserver->didDispatchEvent(dispatchResult);
     // false is okay because waitUntil for fetch event doesn't care about the
     // promise rejection or an uncaught runtime script error.
     waitUntilObserver->didDispatchEvent(false /* errorOccurred */);
 }
 
 void ServiceWorkerGlobalScopeProxy::dispatchForeignFetchEvent(int responseID, int eventFinishID, const WebServiceWorkerRequest& webRequest)
 {
+    if (!OriginTrials::foreignFetchEnabled(workerGlobalScope())) {
+        // If origin trial tokens have expired, or are otherwise no longer valid
+        // no events should be dispatched.
+        // TODO(mek): Ideally the browser wouldn't even start the service worker
+        // if its tokens have expired.
+        ServiceWorkerGlobalScopeClient::from(workerGlobalScope())->respondToFetchEvent(responseID);
+        ServiceWorkerGlobalScopeClient::from(workerGlobalScope())->didHandleFetchEvent(eventFinishID, WebServiceWorkerEventResultCompleted);
+        return;
+    }
+
     ScriptState::Scope scope(workerGlobalScope()->scriptController()->getScriptState());
     RefPtr<SecurityOrigin> origin = SecurityOrigin::create(webRequest.referrerUrl());
     WaitUntilObserver* waitUntilObserver = WaitUntilObserver::create(workerGlobalScope(), WaitUntilObserver::Fetch, eventFinishID);
     ForeignFetchRespondWithObserver* respondWithObserver = ForeignFetchRespondWithObserver::create(workerGlobalScope(), responseID, webRequest.url(), webRequest.mode(), webRequest.frameType(), webRequest.requestContext(), origin, waitUntilObserver);
     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(workerGlobalScope()->scriptController()->getScriptState(), EventTypeNames::foreignfetch, eventInit, respondWithObserver, waitUntilObserver);
     waitUntilObserver->willDispatchEvent();
     DispatchEventResult dispatchResult = workerGlobalScope()->dispatchEvent(fetchEvent);
     respondWithObserver->didDispatchEvent(dispatchResult);
     // false is okay because waitUntil for foreign fetch event doesn't care
     // about the promise rejection or an uncaught runtime script error.
     waitUntilObserver->didDispatchEvent(false /* errorOccurred */);
 }
 
 void ServiceWorkerGlobalScopeProxy::dispatchInstallEvent(int eventID)
 {
     WaitUntilObserver* observer = WaitUntilObserver::create(workerGlobalScope(), WaitUntilObserver::Install, eventID);
     Event* event;
-    if (RuntimeEnabledFeatures::foreignFetchEnabled())
+    if (OriginTrials::foreignFetchEnabled(workerGlobalScope()))
         event = InstallEvent::create(EventTypeNames::install, ExtendableEventInit(), observer);
     else
         event = ExtendableEvent::create(EventTypeNames::install, ExtendableEventInit(), observer);
     workerGlobalScope()->dispatchExtendableEvent(event, observer);
 }
 
 void ServiceWorkerGlobalScopeProxy::dispatchNotificationClickEvent(int eventID, int64_t notificationID, const WebNotificationData& data, int actionIndex)
 {
     WaitUntilObserver* observer = WaitUntilObserver::create(workerGlobalScope(), WaitUntilObserver::NotificationClick, eventID);
     NotificationEventInit eventInit;
@@ skipping 119 matching lines @@
     return *m_document;
 }
 
 ServiceWorkerGlobalScope* ServiceWorkerGlobalScopeProxy::workerGlobalScope() const
 {
     DCHECK(m_workerGlobalScope);
     return m_workerGlobalScope;
 }
 
 } // namespace blink