Pass data saver pref value into embedded worker

content/renderer/service_worker/embedded_worker_dispatcher.cc

 // Copyright 2013 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 "content/renderer/service_worker/embedded_worker_dispatcher.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/strings/string16.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 77 matching lines @@
                             NULL),
                         params.worker_devtools_agent_route_id));
 
   blink::WebEmbeddedWorkerStartData start_data;
   start_data.scriptURL = params.script_url;
   start_data.userAgent = base::UTF8ToUTF16(GetContentClient()->GetUserAgent());
   start_data.waitForDebuggerMode =
       params.wait_for_debugger ?
           blink::WebEmbeddedWorkerStartData::WaitForDebugger :
           blink::WebEmbeddedWorkerStartData::DontWaitForDebugger;
-  start_data.v8CacheOptions =
-      static_cast<blink::WebSettings::V8CacheOptions>(params.v8_cache_options);
+  start_data.v8CacheOptions = static_cast<blink::WebSettings::V8CacheOptions>(
+      params.settings.v8_cache_options);
+  start_data.dataSaverEnabled = params.settings.data_saver_enabled;
 
   wrapper->worker()->startWorkerContext(start_data);
   workers_.AddWithID(wrapper.release(), params.embedded_worker_id);
 }
 
 void EmbeddedWorkerDispatcher::OnStopWorker(int embedded_worker_id) {
   TRACE_EVENT0("ServiceWorker", "EmbeddedWorkerDispatcher::OnStopWorker");
   WorkerWrapper* wrapper = workers_.Lookup(embedded_worker_id);
   if (!wrapper) {
     LOG(WARNING) << "Got OnStopWorker for nonexistent worker";
     return;
   }
 
   // This should eventually call WorkerContextDestroyed. (We may need to post
   // a delayed task to forcibly abort the worker context if we find it
   // necessary)
   stop_worker_times_[embedded_worker_id] = base::TimeTicks::Now();
   wrapper->worker()->terminateWorkerContext();
 }
 
 }  // namespace content