[Offline pages] Empty RequestQueue and SavePageRequest

components/offline_pages/background/request_queue.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 "components/offline_pages/background/request_queue.h"
+
+#include "components/offline_pages/background/save_page_request.h"
+
+namespace offline_pages {
+
+void RequestQueue::GetRequests(const GetRequestsCallback& callback) {}
+
+void RequestQueue::AddRequest(const SavePageRequest& request,
+                              const AddRequestCallback& callback) {}
+
+void RequestQueue::UpdateRequest(const SavePageRequest& request,
+                                 const UpdateRequestCallback& callback) {}
+
+void RequestQueue::RemoveRequest(int64_t request_id,
+                                 const UpdateRequestCallback& callback) {}
+
+void RequestQueue::PurgeRequests(const PurgeRequestsCallback& callback) {}
+
+}  // namespace offline_pages