DataSaver support for off-main-thread-fetch

content/renderer/service_worker/worker_fetch_context_impl.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 CONTENT_RENDERER_SERVICE_WORKER_WORKER_FETCH_CONTEXT_IMPL_H_
 #define CONTENT_RENDERER_SERVICE_WORKER_WORKER_FETCH_CONTEXT_IMPL_H_
 
 #include "content/common/service_worker/service_worker_types.h"
 #include "content/common/worker_url_loader_factory_provider.mojom.h"
 #include "mojo/public/cpp/bindings/associated_binding.h"
@@ skipping 12 matching lines @@
  public:
   explicit WorkerFetchContextImpl(
       mojom::WorkerURLLoaderFactoryProviderPtrInfo provider_info);
   ~WorkerFetchContextImpl() override;
 
   // blink::WebWorkerFetchContext implementation:
   void InitializeOnWorkerThread(base::SingleThreadTaskRunner*) override;
   std::unique_ptr<blink::WebURLLoader> CreateURLLoader() override;
   void WillSendRequest(blink::WebURLRequest&) override;
   bool IsControlledByServiceWorker() const override;
+  void SetDataSaverEnabled(bool) override;
+  bool IsDataSaverEnabled() const override;
 
   // mojom::ServiceWorkerWorkerClient implementation:
   void SetControllerServiceWorker(int64_t controller_version_id) override;
 
   // Sets the service worker status of the parent frame.
   void set_service_worker_provider_id(int id);
   void set_is_controlled_by_service_worker(bool flag);
 
  private:
   mojom::WorkerURLLoaderFactoryProviderPtrInfo provider_info_;
   int service_worker_provider_id_ = kInvalidServiceWorkerProviderId;
   bool is_controlled_by_service_worker_ = false;
 
   // Initialized on the worker thread when InitializeOnWorkerThread() is called.
   std::unique_ptr<ResourceDispatcher> resource_dispatcher_;
   std::unique_ptr<mojo::AssociatedBinding<mojom::ServiceWorkerWorkerClient>>
       binding_;
   mojom::WorkerURLLoaderFactoryProviderPtr provider_;
   mojom::URLLoaderFactoryAssociatedPtr url_loader_factory_;
 
   // Updated when mojom::ServiceWorkerWorkerClient::SetControllerServiceWorker()
   // is called from the browser process via mojo IPC.
   int controller_version_id_ = kInvalidServiceWorkerVersionId;
+
+  bool is_data_saver_enabled_ = false;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_SERVICE_WORKER_WORKER_FETCH_CONTEXT_IMPL_H_