ServiceWorker: Keep the worker alive until FetchEvent.waitUntil settles

third_party/WebKit/public/web/modules/serviceworker/WebServiceWorkerContextClient.h

 /*
  * 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 100 matching lines @@
     // Message loop for debugging.
     virtual WebDevToolsAgentClient::WebKitClientMessageLoop* createDevToolsMessageLoop() { return nullptr; }
 
     // ServiceWorker specific method.
     virtual void didHandleActivateEvent(int eventID, WebServiceWorkerEventResult result) { }
 
     // Called after ExtendableMessageEvent is handled by the ServiceWorker's
     // script context.
     virtual void didHandleExtendableMessageEvent(int eventID, WebServiceWorkerEventResult result) { }
 
-    // ServiceWorker specific methods. Called after FetchEvent is handled by the
-    // ServiceWorker's script context. When no response is provided, the browser
-    // should fallback to native fetch.
-    virtual void didHandleFetchEvent(int fetchEventID) { }
-    virtual void didHandleFetchEvent(int fetchEventID, const WebServiceWorkerResponse& response) { }
+    // ServiceWorker specific methods. respondFetchEvent will be called after
+    // FetchEvent returns a response by the ServiceWorker's script context, and
+    // didHandleFetchEvent will be called after the end of FetchEvent's
+    // lifecycle. When no response is provided, the browser should fallback to
+    // native fetch. EventIDs are the same with the ids passed from
+    // dispatchFetchEvent respectively.
+    virtual void respondToFetchEvent(int responseID) { };
+    virtual void respondToFetchEvent(int responseID, const WebServiceWorkerResponse& response) { };
+    virtual void didHandleFetchEvent(int eventFinishID, WebServiceWorkerEventResult result) { };
 
     // ServiceWorker specific method. Called after InstallEvent (dispatched
     // via WebServiceWorkerContextProxy) is handled by the ServiceWorker's
     // script context.
     virtual void didHandleInstallEvent(int installEventID, WebServiceWorkerEventResult result) { }
 
     // ServiceWorker specific method. Called after NotificationClickEvent
     // (dispatched via WebServiceWorkerContextProxy) is handled by the
     // ServiceWorker's script context.
     virtual void didHandleNotificationClickEvent(int eventID, WebServiceWorkerEventResult result) { }
@@ skipping 72 matching lines @@
     virtual void navigate(const WebString& uuid, const WebURL&, WebServiceWorkerClientCallbacks*) = 0;
 
     // Called when the worker wants to register subscopes to handle via foreign
     // fetch. Will only be called while an install event is in progress.
     virtual void registerForeignFetchScopes(const WebVector<WebURL>& subScopes, const WebVector<WebSecurityOrigin>& origins) = 0;
 };
 
 } // namespace blink
 
 #endif // WebServiceWorkerContextClient_h