Pipe the FirstPartyForCookies to WorkerFetchContext for off-main-thread-fetch

third_party/WebKit/public/platform/WebWorkerFetchContext.h

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef WebWorkerFetchContext_h
 #define WebWorkerFetchContext_h
 
+#include "public/platform/WebURL.h"
+
 namespace base {
 class SingleThreadTaskRunner;
 }  // namespace base
 
 namespace blink {
 
 class WebURLLoader;
 class WebURLRequest;
 
 // WebWorkerFetchContext is a per-worker object created on the main thread,
@@ skipping 15 matching lines @@
   // handle the request correctly in the loading stack later. (Example: service
   // worker)
   virtual void WillSendRequest(WebURLRequest&) = 0;
 
   // Whether the fetch context is controlled by a service worker.
   virtual bool IsControlledByServiceWorker() const = 0;
 
   // The flag for Data Saver.
   virtual void SetDataSaverEnabled(bool) = 0;
   virtual bool IsDataSaverEnabled() const = 0;
+
+  // The URL that should be consulted for the third-party cookie blocking
+  // policy, as defined in Section 2.1.1 and 2.1.2 of
+  // https://tools.ietf.org/html/draft-west-first-party-cookies.
+  // See content::URLRequest::first_party_for_cookies() for details.
+  virtual WebURL FirstPartyForCookies() const = 0;
 };
 
 }  // namespace blink
 
 #endif  // WebWorkerFetchContext_h