DataSaver support 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
 
 namespace base {
 class SingleThreadTaskRunner;
 }  // namespace base
@@ skipping 18 matching lines @@
   // thread.
   virtual std::unique_ptr<WebURLLoader> CreateURLLoader() = 0;
 
   // Called when a request is about to be sent out to modify the request to
   // 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;
 };
 
 }  // namespace blink
 
 #endif  // WebWorkerFetchContext_h