[Offline Prefetch] Backoff support for PrefetchBackgroundTask

chrome/browser/ui/webui/offline/offline_internals_ui_message_handler.cc

 // Copyright 2016 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 "chrome/browser/ui/webui/offline/offline_internals_ui_message_handler.h"
 
 #include <stdint.h>
 #include <stdlib.h>
 #include <utility>
 #include <vector>
@@ skipping 218 matching lines @@
       base::Value(net::NetworkChangeNotifier::IsOffline() ? "Offline"
                                                           : "Online"));
 }
 
 void OfflineInternalsUIMessageHandler::HandleScheduleNwake(
     const base::ListValue* args) {
   AllowJavascript();
   const base::Value* callback_id;
   CHECK(args->Get(0, &callback_id));
 
-  offline_pages::PrefetchBackgroundTask::Schedule();
+  offline_pages::PrefetchBackgroundTask::Schedule(0);
 
   ResolveJavascriptCallback(*callback_id, base::Value("Scheduled."));
 }
 
 void OfflineInternalsUIMessageHandler::HandleCancelNwake(
     const base::ListValue* args) {
   AllowJavascript();
   const base::Value* callback_id;
   CHECK(args->Get(0, &callback_id));
 
@@ skipping 127 matching lines @@
 
   // Get the offline page model associated with this web ui.
   Profile* profile = Profile::FromWebUI(web_ui());
   offline_page_model_ =
       offline_pages::OfflinePageModelFactory::GetForBrowserContext(profile);
   request_coordinator_ =
       offline_pages::RequestCoordinatorFactory::GetForBrowserContext(profile);
 }
 
 }  // namespace offline_internals