DataSaver support for off-main-thread-fetch

third_party/WebKit/Source/core/loader/WorkerFetchContext.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 WorkerFetchContext_h
 #define WorkerFetchContext_h
 
 #include <memory>
 #include "core/CoreExport.h"
 #include "core/loader/BaseFetchContext.h"
@@ skipping 42 matching lines @@
       const KURL&,
       SecurityViolationReportingPolicy) const override;
 
   // FetchContext implementation:
   // TODO(horo): Implement more methods.
   std::unique_ptr<WebURLLoader> CreateURLLoader() override;
   void PrepareRequest(ResourceRequest&, RedirectType) override;
   bool IsControlledByServiceWorker() const override;
   RefPtr<WebTaskRunner> LoadingTaskRunner() const override;
 
+  void AddAdditionalRequestHeaders(ResourceRequest&,
+                                   FetchResourceType) override;
+
   DECLARE_VIRTUAL_TRACE();
 
  private:
   WorkerFetchContext(WorkerGlobalScope&,
                      std::unique_ptr<WebWorkerFetchContext>);
 
   Member<WorkerGlobalScope> worker_global_scope_;
   std::unique_ptr<WebWorkerFetchContext> web_context_;
   Member<ResourceFetcher> resource_fetcher_;
   RefPtr<WebTaskRunner> loading_task_runner_;
 };
 
 }  // namespace blink
 
 #endif  // WorkerFetchContext_h