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

third_party/WebKit/Source/core/loader/ThreadableLoadingContext.cpp

 // 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.
 
 #include "core/loader/ThreadableLoadingContext.h"
 
 #include "core/dom/Document.h"
 #include "core/dom/TaskRunnerHelper.h"
 #include "core/loader/WorkerFetchContext.h"
 #include "core/workers/WorkerGlobalScope.h"
@@ skipping 83 matching lines @@
   }
 
   bool IsSecureContext() const override {
     DCHECK(IsContextThread());
     String error_message;
     return worker_global_scope_->IsSecureContext(error_message);
   }
 
   KURL FirstPartyForCookies() const override {
     DCHECK(IsContextThread());
-    // TODO(horo): Returns the FirstPartyForCookies of the parent frame for
-    // dedicated workers.
-    return worker_global_scope_->Url();
+    return fetch_context_->FirstPartyForCookies();
   }
 
   String UserAgent() const override {
     DCHECK(IsContextThread());
     return worker_global_scope_->UserAgent();
   }
 
   Document* GetLoadingDocument() override { return nullptr; }
 
   RefPtr<WebTaskRunner> GetTaskRunner(TaskType type) override {
@@ skipping 18 matching lines @@
 ThreadableLoadingContext* ThreadableLoadingContext::Create(Document& document) {
   return new DocumentThreadableLoadingContext(document);
 }
 
 ThreadableLoadingContext* ThreadableLoadingContext::Create(
     WorkerGlobalScope& worker_global_scope) {
   return new WorkerThreadableLoadingContext(worker_global_scope);
 }
 
 }  // namespace blink