Implement the infrastructure of creating WorkerFetchContext in worker global scope.

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 17 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef WebServiceWorkerContextClient_h
 #define WebServiceWorkerContextClient_h
 
 #include <memory>
 
 #include "public/platform/WebMessagePortChannel.h"
 #include "public/platform/WebURL.h"
+#include "public/platform/WebWorkerFetchContext.h"
 #include "public/platform/modules/serviceworker/WebServiceWorkerClientsClaimCallbacks.h"
 #include "public/platform/modules/serviceworker/WebServiceWorkerClientsInfo.h"
 #include "public/platform/modules/serviceworker/WebServiceWorkerEventResult.h"
 #include "public/platform/modules/serviceworker/WebServiceWorkerSkipWaitingCallbacks.h"
 #include "public/platform/modules/serviceworker/WebServiceWorkerStreamHandle.h"
 #include "public/web/WebDevToolsAgentClient.h"
 #include "v8/include/v8.h"
 
 namespace blink {
 
@@ skipping 189 matching lines @@
                                             WebServiceWorkerEventResult result,
                                             double event_dispatch_time) {}
 
   // Ownership of the returned object is transferred to the caller.
   // This is called on the main thread.
   virtual WebServiceWorkerNetworkProvider*
   CreateServiceWorkerNetworkProvider() {
     return nullptr;
   }
 
+  // Creates a WebWorkerFetchContext for a service worker. Ownership of the
+  // returned object is transferred to the caller. This is called on the main
+  // thread. This is used only when off-main-thread-fetch is enabled.
+  virtual std::unique_ptr<blink::WebWorkerFetchContext>
+  CreateServiceWorkerFetchContext() {
+    return nullptr;
+  }
+
   // Ownership of the returned object is transferred to the caller.
   // This is called on the main thread.
   virtual WebServiceWorkerProvider* CreateServiceWorkerProvider() {
     return nullptr;
   }
 
   // Ownership of the passed callbacks is transferred to the callee, callee
   // should delete the callbacks after calling either onSuccess or onError.
   // WebServiceWorkerClientInfo and WebServiceWorkerError ownerships are
   // passed to the WebServiceWorkerClientCallbacks implementation.
@@ skipping 55 matching lines @@
   // 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>& sub_scopes,
       const WebVector<WebSecurityOrigin>& origins) = 0;
 };
 
 }  // namespace blink
 
 #endif  // WebServiceWorkerContextClient_h